v0.4.0 - Move Code Completion

This version adds code completion.

Code Completion

Code completion feature currently works only for standard library modules. It includes
import, module methods and built-in functions suggestions based on cursor context.
More detail will be given in docs section which will be created and improved through
patches in 0.4 version of Move IDE.

Feature can be turned off in extension settings (move.autocomplete).

Notes

• tree-sitter grammar integrated into a second Language Server which provides autocompletion
• binary downloader improved, all the platforms are supported (including Windows)
• completely refactored code, more error checks
• fixed highlighting of constants in scripts