revert: #74: Revert adapter breaking changes

[antonpetrovmain]

Why?

On a clean install the plugin cannot be configured due to issues with adapters, e.g. for javadbg:

Failed to run `config` for mason-nvim-dap.nvim

...m-dap.nvim/lua/mason-nvim-dap/mappings/adapters/init.lua:7: module 'mason-nvim-dap.mappings.adapters.javadbg' not found:
	no field package.preload['mason-nvim-dap.mappings.adapters.javadbg']

We would like to revert the last 2 commits that introduced the breaking change.

What?

Revert last 2 commits using git revert.

Testing done

1. Updated to latest on the main branch.

2. Verified that the error above exists.
   

3. Reverted last 2 commits and observed there is no longer an issue with the javadbg adapter.
   

as expected.

Notes

Fixes #74.