Convert issue and bug templates to use forms (#11534)

Signed-off-by: Marc Handalian <marc.handalian@gmail.com>
Signed-off-by: Marc Handalian <handalm@amazon.com>

.github/ISSUE_TEMPLATE/bug_template.yml

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+name: 🐛 Bug report
+description: Create a report to help us improve
+title: "[BUG] <title>"
+labels: ['bug, untriaged']
+body:
+  - type: textarea
+    attributes:
+      label: Describe the bug
+      description: A clear and concise description of what the bug is.
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: Related component
+      description: Choose a specific OpenSearch component your bug belongs to.  If you are unsure which to select or if the component is not present, select "Other".
+      multiple: false
+      options:
+        - Other
+        - Build
+        - Clients
+        - Cluster Manager
+        - Extensions
+        - Indexing:Performance
+        - Indexing:Replication
+        - Indexing
+        - Libraries
+        - Plugins
+        - Search:Aggregations
+        - Search:Performance
+        - Search:Query Capabilities
+        - Search:Query Insights
+        - Search:Relevance
+        - Search:Remote Search
+        - Search:Resiliency
+        - Search:Searchable Snapshots
+        - Search
+        - Storage:Durability
+        - Storage:Performance
+        - Storage:Remote
+        - Storage:Snapshots
+        - Storage
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: To Reproduce
+      description: Steps to reproduce the behavior.
+      value: |
+        1. Go to '...'
+        2. Click on '....'
+        3. Scroll down to '....'
+        4. See error
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Expected behavior
+      description: A clear and concise description of what you expected to happen.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Additional Details
+      description: Add any other context about the problem here.
+      value: |
+        **Plugins**
+        Please list all plugins currently enabled.
+
+        **Screenshots**
+        If applicable, add screenshots to help explain your problem.
+
+        **Host/Environment (please complete the following information):**
+         - OS: [e.g. iOS]
+         - Version [e.g. 22]
+
+        **Additional context**
+        Add any other context about the problem here.
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: 🎆 Feature request
+description: Suggest an idea for this project
+title: '[Feature Request] <title>'
+labels: ['enhancement, untriaged']
+body:
+  - type: textarea
+    attributes:
+      label: Is your feature request related to a problem? Please describe
+      description: A clear and concise description of what the problem is.
+      placeholder: Ex. I'm always frustrated when [...]
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Describe the solution you'd like
+      description: A clear and concise description of what you want to happen.
+    validations:
+      required: true
+  - type: dropdown
+    attributes:
+      label: Related component
+      description: Choose a specific OpenSearch component your feature request belongs to.  If you are unsure of which component to select or if the component is not present, select "Other".
+      multiple: false
+      options:
+        - Other
+        - Build
+        - Clients
+        - Cluster Manager
+        - Extensions
+        - Indexing:Performance
+        - Indexing:Replication
+        - Indexing
+        - Libraries
+        - Plugins
+        - Search:Aggregations
+        - Search:Performance
+        - Search:Query Capabilities
+        - Search:Query Insights
+        - Search:Relevance
+        - Search:Remote Search
+        - Search:Resiliency
+        - Search:Searchable Snapshots
+        - Search
+        - Storage:Durability
+        - Storage:Performance
+        - Storage:Remote
+        - Storage:Snapshots
+        - Storage
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Describe alternatives you've considered
+      description: A clear and concise description of any alternative solutions or features you've considered.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.
+    validations:
+      required: false

.github/workflows/triage.yml

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+name: Auto triage based on the component label in issue
+
+on:
+  issues:
+    types: [opened, reopened, transferred]
+
+jobs:
+  apply-label:
+    if: github.repository == 'opensearch-project/OpenSearch'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v7
+        with:
+          script: |
+            const { issue, repository } = context.payload;
+            const { number, body } = issue;
+            const { owner, name } = repository;
+            const regex = /###\sRelated\scomponent\n\n(\w*)\n/gm;
+            let match;
+            while ( ( match = regex.exec( body ) ) ) {
+              const [ , component_label ] = match;
+              await github.rest.issues.addLabels( {
+                owner: owner.login,
+                repo: name,
+                issue_number: number,
+                labels: [ `${ component_label }` ],
+              } );
+            }
+            github.rest.issues.addLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: ['untriaged']
+            })