New File update

"New file" button added

Still not signed.
Still doesn't support compiling through the buttons.
Still very basic.

Initial release

Initial release UNofficial C/C++ plugin.
Now it just provides basic LSP via clangd. Unfortunately it does NOT support anything "best" IDE experience, e.g. ('autosurrounding' "brakets") or //commenting out lines of code. It even does NOT provide special cases in the Project menu.

Of course, there's still no support on STM32CubeIDE, or CMake, or Ninja, or Makefile from JB's Clion. However, it's better than nothing, huh?