TactilityC additions (#287)

New TactilityC implementations for:
- WiFi
- GPS
- Preferences
- Timezone

Also includes:
- Some fixes to enums/naming
- Cleanup elsewhere

TactilityC/Include/tt_gps.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+bool tt_gps_has_coordinates();
+
+bool tt_gps_get_coordinates(
+    float* longitude,
+    float* latitude,
+    float* speed,
+    float* course,
+    int* day,
+    int* month,
+    int* year
+);
+
+#ifdef __cplusplus
+}
+#endif