Full Micron markdown and field support, dark mode

[RFnexus]

This PR includes a rewrite of micron-parser.js to provide complete Micron markdown support, including input fields for submitting data to nodes hosting Micron pages. micron-parser.js is now a 1:1 reference implementation of MicronParser.py from NomadNet.

Additionally dark mode support has been added for all TailwindCSS classes

[markqvist]

This is looking so good!

[liamcottle]

Thank you very much for your work on this :) Merged in!

I will need to look into reworking how the internal links for nomad network page downloads are handled in MeshChat, as some sites are using the link id to determine if a user is logged in.

For example, the etux node app template files:
https://codeberg.org/etux/Node_App_Template/src/branch/main/login.mu#L23
f166946957ffb27d92b196df868cc20c:/page/index.mu

However, since MeshChat establishes a new link for every page that loads, the link id changes, which breaks that functionality.

Just a side note on dark mode, I personally use light mode 😂, so you will likely notice as new features are added, dark mode support might be lacking. I'll try to extract any new UI into separate component files, but it's possible I will forget some dark mode classes here and there...

Thanks again!