refactor: SDK files

- remove SDK files - moved to mingholy/feat/sdk-draft branch
- revert package.json & launch.json changes

vitest.config.ts

@@ -1,14 +0,0 @@
-import { defineConfig } from 'vitest/config';
-
-export default defineConfig({
-  test: {
-    projects: [
-      'packages/cli',
-      'packages/core',
-      'packages/vscode-ide-companion',
-      'packages/sdk/typescript',
-      'integration-tests',
-      'scripts',
-    ],
-  },
-});