docs: add azure pipelines CI integration

[Odonno]

Description

Inspired from the GitHub Actions template, this is a yaml template definition that can be used as-is with Azure Pipelines.
Tested and it works like a charm.

This will validate:

• all the commits in a PullRequest
• or the last commit otherwise (pipeline triggered by a push, triggered manually, etc.)

[codesandbox-ci]

This pull request is automatically built and testable in CodeSandbox.

To see build info of the built libraries, click here or the icon next to each commit SHA.

[escapedcat]

Thanks!

[Odonno]

Just merged the two steps for PR into one because the variable is scoped to the step... It is good now.

[escapedcat]

Would you mind also updating the format, thanks:

 
   - task: NodeTool@0
     inputs:
-      versionSpec: "20.x"
+      versionSpec: '20.x'
       checkLatest: true
 
   - script: |

See: https://github.com/conventional-changelog/commitlint/actions/runs/11390612946/job/31720085369

[escapedcat]

🎉