Build LSP directly in destination so source maps are correct (#749)

* Build LSP directly in destination so source maps are correct

* Fix LSP `outFiles`

* Trigger workflows on LSP changes

Author: lionel-

.github/workflows/ci.yaml

@@ -6,11 +6,13 @@ on:
     branches:
       - main
     paths:
+      - 'apps/lsp/**'
       - 'apps/vscode/**'
   pull_request:
     branches:
       - main
     paths:
+      - 'apps/lsp/**'
       - 'apps/vscode/**'
   workflow_dispatch: