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.

Drivers/gps-meshtastic-module/CMakeLists.txt

@@ -0,0 +1,12 @@
+cmake_minimum_required(VERSION 3.20)
+
+include("${CMAKE_CURRENT_LIST_DIR}/../../Buildscripts/module.cmake")
+
+file(GLOB_RECURSE SOURCE_FILES "source/*.c*")
+
+tactility_add_module(gps-meshtastic-module
+    SRCS ${SOURCE_FILES}
+    PRIV_INCLUDE_DIRS private/
+    INCLUDE_DIRS include/
+    REQUIRES TactilityKernel gps-module gps-generic-module minmea
+)