chore: Add development dependency on Fevol's obsidian-typings

[claremacrae]

For a better development experience, via more useful comments on the Obsidian API in IDEs.

Types of changes

Internal changes:

• Infrastructure (prefix: chore - examples include GitHub Actions, issue templates)

Description

Add dependency on Fevol's obsidian-typings:

• https://github.com/Fevol/obsidian-typings

Motivation and Context

For better help about Obsidian API types in IDEs.

How has this been tested?

• By running the existing tests

It does not change the release process, so no need to run smoke tests.

Screenshots (if appropriate)

Checklist

• My code follows the code style of this project and passes yarn run lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• My change has adequate Unit Test coverage.

Terms

• My contribution follows this project's contributing guide
• I agree to follow this project's Code of Conduct

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud