easy-dotnet.nvim

### Is your feature related to a problem?

dotnet development in neovim has it's problems, we might be able to make it a little bit better

### Describe the new feature

https://github.com/GustavEikaas/easy-dotnet.nvim is a plugin that adds various tools to work with in dotnet environment
it can be very useful for people doing dotnet work

### Additional context

_No response_

Start by reviewing the easy-dotnet.nvim repository linked in the issue and the existing plugin specifications in AstroCommunity to understand the expected integration shape. Add the plugin specification for dotnet development and verify that it loads correctly with the repository's configuration conventions.

Written by the indexing model from the issue text.