SDK improvements (#352)

TactilityC additions for:
- C randomization functions
- Tactility app paths
- Tactility locks

TactilityC/Source/tt_lock.cpp

@@ -0,0 +1,21 @@
+#include <tt_lock.h>
+#include <tt_lock_private.h>
+
+extern "C" {
+
+bool tt_lock_acquire(LockHandle handle, TickType timeout) {
+    auto holder = static_cast<LockHolder*>(handle);
+    return holder->lock->lock(timeout);
+}
+
+bool tt_lock_release(LockHandle handle) {
+    auto holder = static_cast<LockHolder*>(handle);
+    return holder->lock->unlock();
+}
+
+void tt_lock_free(LockHandle handle) {
+    auto holder = static_cast<LockHolder*>(handle);
+    delete holder;
+}
+
+}