Server cli

[TimGebert]

Proposed changes

Adds a command line tool that allows the user to interact with the backend server using oap-cli
The command currently has four sub-commands, add, list, build and remove.

Add: yarn oap-cli add <options>
Allows the user to add specifications and sdkConfigs to the server.
Has ability to pipe items from a file, or to build one manually if none are provided.

List: yarn oap-cli list <options>
Allows the user to view all specifications, sdkConfigs and sdks that are currently being stored in the server.

Build: yarn oap-cli build <specificationId> <sdkConfigId>
Allows the user to build a new sdk.
If user specifies * for specificationId or sdkConfigId, the tool will build all items that can be found in the server for that option.

Remove: yarn oap-cli remove <type> <id>
Allows the user to remove and item from the server.
Type is one of specifications, sdkConfigs or sdks.

Todo:

• add checks when adding a specification of sdkConfig
• more options for each sub-command
• --help options could do with some improvement

Types of changes

What types of changes does your code introduce to OpenAPI Platform?

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I have read the CONTRIBUTING doc
• I have signed and submitted the appropriate CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules