Split common into composite subprojects with project references

- common/tsconfig.json is a solution root referencing layer tsconfigs
- Each layer has composite tsconfig with correct references and outDir
- Break buffer/services cycle via buffer-local service interfaces
- Move cell types, keyboard/unicode types, TaskQueue, and TerminalOptions
- Exclude *.test.ts from composite builds; fix parser IDisposable imports

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>

src/common/parser/ApcParser.ts

@@ -6,7 +6,7 @@
 import { IApcHandler, IHandlerCollection, ApcFallbackHandlerType, IApcParser, ISubParserStackState } from 'common/parser/Types';
 import { ParserConstants } from 'common/parser/Constants';
 import { utf32ToString } from 'common/encoding/TextDecoder';
-import { IDisposable } from 'common/services/Types';
+import { IDisposable } from 'common/base/Lifecycle';
 import { LimitedStringBuilder } from 'common/base/StringBuilder';
 
 const EMPTY_HANDLERS: IApcHandler[] = [];