TactilityC additions (#287)

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

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

TactilityC/Include/tt_time.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#define TT_TIMEZONE_NAME_BUFFER_LENGTH 32
+#define TT_TIMEZONE_CODE_BUFFER_LENGTH 48
+
+/**
+ * Set the timezone
+ * @param[in] name human-readable name
+ * @param[in] code the technical code (from timezones.csv)
+ */
+void tt_timezone_set(const char* name, const char* code);
+
+/**
+ * Get the name of the timezone
+ * @param[out] buffer the output buffer which will include a null terminator (should be TT_TIMEZONE_NAME_BUFFER_LENGTH)
+ * @param[in] bufferSize the size of the output buffer
+ */
+bool tt_timezone_get_name(char* buffer, size_t bufferSize);
+
+/**
+ * Get the code of the timezone (see timezones.csv)
+ */
+bool tt_timezone_get_code(char* buffer, size_t bufferSize);
+
+/** @return true when clocks should be shown as a 24 hours one instead of 12 hours */
+bool tt_timezone_is_format_24_hour();
+
+/** Set whether clocks should be shown as a 24 hours instead of 12 hours
+ * @param[in] show24Hour
+ */
+void tt_timezone_set_format_24_hour(bool show24Hour);
+
+#ifdef __cplusplus
+}
+#endif