feat: Starting to add some types into the convert-issue-to-spdx file

[mathild3r]

• [ ] Tests written and linted ℹ︎
• [ ] Documentation written in Wiki/README
• [ ] Commit history is tidy & follows Contributing guidelines ℹ︎

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[lili2311]

I've fixed the linting to pick up issues correctly in src and to run during test, please rebase & 👁️ the failing tests.

[aarlaud]

:tada: This PR is included in version 1.2.0 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket: