Add initial support for Hackaday Communicator (#8771)

* Add initial support for Hackaday Communicator

* Fork it!

* Trunk

* Remove unused elements from the HackadayCommunicatorKeyboard

* Don't divide by zero.

src/input/HackadayCommunicatorKeyboard.h

@@ -0,0 +1,26 @@
+#include "TCA8418KeyboardBase.h"
+
+class HackadayCommunicatorKeyboard : public TCA8418KeyboardBase
+{
+  public:
+    HackadayCommunicatorKeyboard();
+    void reset(void);
+    void trigger(void) override;
+    virtual ~HackadayCommunicatorKeyboard() {}
+
+  protected:
+    void pressed(uint8_t key) override;
+    void released(void) override;
+
+    void updateModifierFlag(uint8_t key);
+    bool isModifierKey(uint8_t key);
+
+  private:
+    uint8_t modifierFlag;        // Flag to indicate if a modifier key is pressed
+    uint32_t last_modifier_time; // Timestamp of the last modifier key press
+    int8_t last_key;
+    int8_t next_key;
+    uint32_t last_tap;
+    uint8_t char_idx;
+    int32_t tap_interval;
+};