Project manager: support for LSP

[diegoiast]

Steps:

• Find a suitable library and incorporate it.
• qmdiLib: we have API for calling other plugins (PluginManager::open()) - but we have no way of getting back data from that plugin:
  • The idea is that the text editor would request the plugin manager : "ask the plugins for tooltip for file %s, line/row %d/%d" - and in return that API would return a JSON or something. If no request is made - the text editor should not display a tooltip, or a limited one at least.
  • We can also have a plugin that works on ctags or something, which will have limited capabilities.
  • ctags can be run: ctags -R --exclude=build --languages=C,C++,Python,Java,JavaScript,Rust,Go,ObjectiveC
  • parser for ctags is simple to create using chatgpt.

[diegoiast]

Status:
I have an LSP client library which I incorporated. However, even basic "lets run clang" does not work. At this moment.
Tested only on Linux.

[diegoiast]

Testing is done in this repo: https://github.com/diegoiast/lsp-client-demo-qt

status:

1. I can connect to the LSP server.
2. I can get information from hover status.

TODO:

1. Document diagnostics are pushed from the server, and I need to architecture how this is handled in my app.
2. Refactor hover in the editor, so the provider will display text (currently text is created in the plugin)
3. Code for dealing with LSP is currently synchronous in the IDE, needs to be refactored to be asynchronous.