Don't force update webview content when retainContextWhenHidden is set and contents have not changed

Fixes #59823

Fixes #18879

This is the modern form of module resolution  recommend by typescript

Use the shared tsconfig and fix a number of strict mode typing errors and null check errors

fuzzyScore - allow passing of lower-case variants of things, allow passing of start positions, move whitespace starts to completion model

- Move clear action to search input

fixes #59829

Fix #45853 

debt - remove suggest adapter and use CompletionItemProvider from modes.ts. Also fixes https://github.com/Microsoft/monaco-editor/issues/985