Add sourcemaps for development mode

[ibolton336]

• When 'npm run watch' is run you are now able to properly debug the ui code with sourcemaps enabled.
• Adds missing dependencies. Fixes:

  
  ➜  vscode git:(main) npm run compile

konveyor@0.0.1 compile webpack --mode production --config webpack.config.ts

[webpack-cli] Unable load '/home/ibolton/Development/editor-extensions/vscode/webpack.config.ts' [webpack-cli] Unable to use specified module loaders for ".ts". [webpack-cli] Cannot find module 'ts-node/register' from '/home/ibolton/Development/editor-extensions/vscode' [webpack-cli] Cannot find module 'sucrase/register/ts' from '/home/ibolton/Development/editor-extensions/vscode' [webpack-cli] Cannot find module '@babel/register' from '/home/ibolton/Development/editor-extensions/vscode' [webpack-cli] Cannot find module 'esbuild-register/dist/node' from '/home/ibolton/Development/editor-extensions/vscode' [webpack-cli] Cannot find module '@swc/register' from '/home/ibolton/Development/editor-extensions/vscode' [webpack-cli] Please install one of them ➜ vscode git:(main)

- Updates tsconfig to use strict mode and newer ES2020 version
- Turns on sourcemaps for extension as well as webview config

[ibolton336]

The only thing I recall missing from this, based on our conversation, is the ability to set breakpoints in the extension logic.

Fixed in latest commit.