Part 1 - Refactor web-ide-vscode-extension main

• Part 1 - Refactor web-ide-vscode-extension main (!81 - merged)
• Part 2 - Add change event handling in vscode fs (!80 - merged)

Screenshots

• Small change you might notice, the modal now shows up while the file tree is loading, which is a nice improvement 🎉
• No extra errors found in console 🎉

20221120_refactor_demo

Description

• Add disposable handling inspired from vscode's git extension.
• Make the UI setup more parallelized