Fix SDK (#487)

* **New Features**
  * Added a full SDK integration test suite with a minimal sample app and automated multi-platform build/run flows.
  * Added a new CLI build tool to orchestrate SDK download, build, packaging, and device install/run.

* **Documentation**
  * Added typography design token suggestion to ideas.

* **Chores**
  * Updated CI to run SDK integration prep and test steps.
  * Adjusted build artifact paths, license mappings, and repository ignore rules (including .tactility).

.gitignore

@@ -3,7 +3,6 @@
 
 build/
 buildsim/
-build-*/
 cmake-*/
 CMakeCache.txt
 *.cbp
@@ -21,4 +20,6 @@ dependencies.lock
 *.code-workspace
 .gitpod.yml
 
-sdkconfig.board.*.dev
+sdkconfig.board.*.dev
+
+.tactility/