feat: extract groombook/web from monorepo

- Copy apps/web/ with all src, components, pages, portal
- Inline packages/types/ as local packages/types module
- Add tsconfig path aliases for @groombook/types
- Port Dockerfile and CI workflow
- Image name: ghcr.io/groombook/web

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.eslintignore

@@ -0,0 +1,7 @@
+# Ignore untracked .js files containing JSX (build artifacts)
+src/__tests__/*.js
+src/portal/sections/*.js
+src/portal/*.js
+src/pages/*.js
+src/components/*.js
+src/lib/*.js