Fixes and new apps (#30)

- M5 Unit Modules library + M5 Unit Test app
- Minor fixes for TodoList, TwoEleven, Snake, Brainfuck and Breakout
- Fixed SerialConsole to use the uart controller as it was broken in one of the many updates
- Fixed keyboard input in TwoEleven, Breakout, Magic8Ball and Snake
- Bluetooth Media Keys app, supports pressing physical keys to trigger the corresponding buttonmatrix button
- Epub Reader app

Apps/M5UnitTest/main/Source/TestUnitRfid2.h

@@ -0,0 +1,44 @@
+#pragma once
+#include "TestViewBase.h"
+#include <UnitRfid2.h>
+#include <UnitPaHub.h>
+#include <tt_app.h>
+
+class TestUnitRfid2 final : public TestViewBase {
+public:
+    void onStart(lv_obj_t* parent, AppHandle handle, M5UnitTest* app) override;
+    void onStop() override;
+
+private:
+    UnitPaHub    hub_;
+    UnitRfid2    unit_;
+    lv_timer_t*  timer_       = nullptr;
+    lv_timer_t*  pulseTimer_  = nullptr;
+    bool         usingPaHub_  = false;
+    bool         cardShown_   = false;
+
+    // Idle group
+    lv_obj_t*    idleGroup_   = nullptr;
+    lv_obj_t*    circle_      = nullptr;
+
+    // Card info group
+    lv_obj_t*    cardGroup_   = nullptr;
+    lv_obj_t*    lblUid_      = nullptr;
+    lv_obj_t*    lblType_     = nullptr;
+    lv_obj_t*    lblSak_      = nullptr;
+
+    // Pulse state
+    uint8_t      pulseOpa_    = 220;
+    int8_t       pulseDir_    = 8;
+
+    // Stored card info
+    UnitRfid2::Uid      lastUid_   = {};
+    UnitRfid2::CardType cardType_  = UnitRfid2::CardType::Unknown;
+
+    void selectIfNeeded();
+    void showCard(const UnitRfid2::Uid& uid);
+
+    static void onTimer(lv_timer_t* t);
+    static void onPulseTimer(lv_timer_t* t);
+    static void onClear(lv_event_t* e);
+};