ci: add PR title checks

[miquelbeltran]

ci: add PR title checks

Description :memo:

• Purpose: Enforce the user of Conventional Commits in PR titles
• Approach: Adds a GitHub Actions configuration that runs on PR creation and update

Type of change

• [x] New feature (non-breaking change which adds functionality)

Updates

• Added pr.yml configuration file.
• The file contains the GitHub Actions configuration, with the following steps:
  1. Checks if the PR title is valid
  2. If not, it adds an info message
  3. If then is fixed, the info message is removed

Test plan :test_tube:

• Needs to be merged into develop to see it in action.
• Uses a standard template found in other repos so it should work the same.

Author to check :eyeglasses:

• [x] Project and all contained modules builds successfully
• [x] Self-/dev-tested
• [x] Unit/UI/Automation/Integration tests provided where applicable
• [x] Code is written to standards
• [x] Appropriate documentation written (code comments, internal docs)

Reviewer to check :heavy_check_mark:

• [ ] Project and all contained modules builds successfully
• [ ] Change has been dev-/reviewer-tested, where possible
• [ ] Unit/UI/Automation/Integration tests provided where applicable
• [ ] Code is written to standards
• [ ] Appropriate documentation written (code comments, internal docs)