Migrate procmacros support to the v1-v2 compatibility mode of PMS

[mkaput]

TODO:

• Obtain somehow information about the mapping of attribute to it's plugin version (i.e. from scarb, on defined macros request?)
• Modify proc_macro_server_types to allow v1/v2 requests (different proc-macro-server request formats)
• Using 1. and 2. point send the request in appropriate format for expansion to proc-macro-server

Testing scenarios

1. test with a package that has dependency on proc macro that uses old API
2. test with a package that has dependency on proc macro that uses new API
3. test with a package that has dependency on both mentioned proc macros

In all of the above cases:

• check if macros expand correctly via Cairo: Recursively expand (...) command from command palette
• check if an invalid code treated with macros generates reasonable diagnostics
• check if any package has only macros it directly depends on available(exception: re-export-cairo-plugins)
• check if diagnostics are correctly mapped
• check if goto/hover etc. work correctly (also related to mappings)

Note

Keep in mind macros may take a while to be calculated especially on large projects like OZ. Spinner is your friend in assessing whether any other calculations are still going on.