Add TT21100 touchscreen component (#4793)

Co-authored-by: Rajan Patel <rpatel3001@gmail.com>
Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/tt21100/binary_sensor/tt21100_button.cpp

@@ -0,0 +1,27 @@
+#include "tt21100_button.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace tt21100 {
+
+static const char *const TAG = "tt21100.binary_sensor";
+
+void TT21100Button::setup() {
+  this->parent_->register_button_listener(this);
+  this->publish_initial_state(false);
+}
+
+void TT21100Button::dump_config() {
+  LOG_BINARY_SENSOR("", "TT21100 Button", this);
+  ESP_LOGCONFIG(TAG, "  Index: %u", this->index_);
+}
+
+void TT21100Button::update_button(uint8_t index, uint16_t state) {
+  if (index != this->index_)
+    return;
+
+  this->publish_state(state > 0);
+}
+
+}  // namespace tt21100
+}  // namespace esphome