Initial project setup for KiCad WebAssembly port

- Add KiCad fork as git submodule
- Create project structure (patches, stubs, cmake, scripts, core, docs)
- Add knowledge base and implementation plan documentation
- Add README with project overview and goals

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "kicad"]
+	path = kicad
+	url = git@github.com:VV-EE/kicad-source-mirror.git