docs: Add ADR template (#291)

docs/adr/adr-template.md

@@ -0,0 +1,74 @@
+# ADR template
+
+This is the base template that we use
+
+```
+# ADR [Number]: [Title of Decision]
+
+## Status
+[Proposed | Accepted | Deprecated | Superseded by ADR [number]]
+
+## Submitters
+[List of people who proposed this decision. Include GitHub usernames or names with contact information if needed.]
+- @username1
+- @username2
+
+## Decision Owners
+[List of people responsible for driving the decision and following up on its implementation. This may include teams or subject matter experts.]
+- @owner1
+- @team1
+
+## Context
+Describe the problem, need, or feature request that prompted this decision. Include any relevant background information, constraints, and considerations that were taken into account.
+
+- **Why do we need this decision?**
+- **What problem does it solve or avoid?**
+- **Are there any existing issues/discussions/pull requests related to this?** (Include links to relevant GitHub issues, forum threads, or discussion channels.)
+
+## Decision
+Clearly state the decision that was made. Describe the chosen solution or approach in detail so that others can understand what was decided.
+
+- **What will be done?**
+- **What will not be done?** (If applicable, specify what was explicitly ruled out.)
+
+## Rationale
+Explain why this decision was made, including a discussion of the alternatives considered and why they were not chosen.
+
+- **Alternatives Considered:**
+  - Alternative 1: [Description and reasons for rejection]
+  - Alternative 2: [Description and reasons for rejection]
+- **Pros and Cons**: Outline the pros and cons of the chosen solution.
+- **Why is this decision the best option?** (Explain the key factors that influenced this choice.)
+
+## Consequences
+Describe the positive and negative outcomes of the decision, including any potential risks or technical debt.
+
+- **Positive Impact**: What benefits does this decision bring to the project?
+- **Negative Impact**: What challenges or limitations does this introduce?
+- **Mitigations**: How will we address potential drawbacks or issues?
+
+## Implementation
+(Optional, if relevant)
+Outline the steps required to implement the decision. This section is particularly useful if the decision involves a series of actions or a roadmap.
+
+- **Phase 1**: [Description]
+- **Phase 2**: [Description]
+- **Estimated Effort**: Provide a rough estimate of time or effort needed.
+
+## References
+Include any external links, documents, discussions, or research that were referenced during the decision-making process.
+
+- [Link to relevant GitHub issue or pull request](#)
+- [Link to forum discussion](#)
+- [Documentation or research sources](#)
+
+
+## Changelog
+Track changes or updates to this ADR over time. Include the date, author, and a brief description of each change.
+
+- **[YYYY-MM-DD]**: [@username] - [Brief description of the change]
+  - Example: **[2024-10-22]**: @owner1 - Updated the decision to include support for Redis caching.
+- **[YYYY-MM-DD]**: [@username] - [Brief description of the change]
+  - Example: **[2025-01-15]**: @username2 - Deprecated this ADR due to a shift in the database strategy.
+
+```