Extension documentation: Provide debugging hints

[cweiske]

Describe your suggested feature

I'm trying to write an extension and have a hard time.

The documentation at https://miru.js.org/en/developer/ should talk about:

• Miru supports hot reloading when javascript code changes on disk
• Extension files are copied into ~/Documents/miru/extensions/ when installing them even from a local directory
• The log file in ~/Documents/miru/miru.log
• How to get debug messages from own code (console.log() writes into miru.log file)
• Settings > Advanced > Extension Log Window
• this.request does not take absolute URLs with hostname, but wants relative URL paths that it combines with @webSite.
• detail method: Why are there multiple URLs within each episode ("episodes" are seasons, and urls are episodes?).
• what are detail.metadata used for? What keys are allowed?
  • the current 1.8.1 code does not use it.

Acknowledgements

• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.

[appdevelpo]

For some additional hint you can check this
For debugging extensions, you use a extension debugger(windows currently). console.log will print under the extension you have selected.