build(transform): add .gitkeep to typescript/src/

For documentation publication CI.

Author: thewtex

packages/transform/.gitignore

@@ -1,10 +1,19 @@
 emscripten-build/
 wasi-build/
 python/itkwasm-transform-wasi/itkwasm_transform_wasi/wasm_modules/
+python/
 typescript/dist/
+typescript/src/*.ts
 typescript/test/browser/demo-app/public/
 typescript/demo-app/
 typescript/src/version.ts
+typescript/.nojekll
+typescript/.npmignore
+typescript/README.md
+typescript/index.html
+typescript/test/
+typescript/tsconfig.json
+typescript/vite.config.js
 test/pyodide-dispatch.tar.bz2
 test/pyodide-emscripten.tar.bz2
 test/data/