Add GitHub action to apply conventional commit check

[frtibble]

Required by #651

Description

Conventional commits apply naming conventions to PRs (e.g by prefixing "feat", "fix", "docs" etc.). This will enable us to automatically determine the semantic version bump based on the PR title. For example, a PR with the naming "feat: adds x,y,z" would automatically cause the release to increase its minor version, e.g. from 1.1.0 to 1.2.0.

In order to use this, we'd like to introduce a GitHub action which checks that the conventional commit naming is applied. There is a GitHub action semantic-pull-request which is used by Microsoft.

Tasks

• Add GitHub Action for semantic-pull-request