Thread, Timer and flash.sh improvements (#165)

- Various improvements to Thread and Timer:
  - Remove "mark as static" option as it is unused
  - Implemented core pinning for ESP32 platforms
  - Use `TickType_t` consistently (instead of `uint32_t`)
  - Use `enum class` instead of `enum`
- Fix for `flash.sh` not working when using `pip` to install `esptool`

TactilityCore/Source/DispatcherThread.cpp

@@ -18,7 +18,7 @@ DispatcherThread::DispatcherThread(const std::string& threadName, size_t threadS
 }
 
 DispatcherThread::~DispatcherThread() {
-    if (thread->getState() != Thread::StateStopped) {
+    if (thread->getState() != Thread::State::Stopped) {
         stop();
     }
 }