GPS refactor & license text updates (#601)

- Split up `gps-generic-module` into:
  - `gps-generic-module` that contains only interfaces/configs/bindings (Apache license)
  - `gps-meshtastic-module` that contains an implementation (GPL license)
- Update `LICENSE.md` for changes, but also added clarifications
- Added licenses to directories where they were missing
- Changed license of some test projects from GPL to Apache.

Tactility/CMakeLists.txt

@@ -11,6 +11,7 @@ list(APPEND REQUIRES_LIST
     crypt-module
     gps-module
     gps-generic-module
+    gps-meshtastic-module
     lv_screenshot
     minitar
 )