Adapting Dokka configuration for multi-module projects

[franciscodr]

This pull request uses the Dokka feature for building documentation for multi-module projects, which will solve the issue reported by @CLOVIS-AI. The current build settings treat Arrow as a single-module project causing the different modules to overwrite each other.

The proposed changes are:

• Use dokkaHtmlMultiModule instead of dokkaGfm in the GitHub Actions workflow
• Add settings to the Gradle file for the dokkaHtmlMultiModule and dokkaTaskPartial tasks to skip deprecated methods and set the links to the source code

[github-actions]

Kover Report

Total Project Coverage	43.82%

[CLOVIS-AI]

The issue was #2882 :)

[nomisRev]

@franciscodr should we do a follow-up PR where we Copy them into /docs and setup GitHub pages already?

[franciscodr]

@franciscodr should we do a follow-up PR where we Copy them into /docs and setup GitHub pages already?

I think so. We can merge this pull request to solve the current overwriting API documentation issue. Once this is fixed, we could submit a different one for the GitHub pages setup.