Create base touchscreen component and refactor ektf2232 (#3083)

Co-authored-by: Oxan van Leeuwen <oxan@oxanvanleeuwen.nl>

esphome/components/touchscreen/__init__.py

@@ -0,0 +1,39 @@
+import esphome.config_validation as cv
+import esphome.codegen as cg
+
+from esphome.components import display
+from esphome import automation
+from esphome.const import CONF_ON_TOUCH
+
+CODEOWNERS = ["@jesserockz"]
+IS_PLATFORM_COMPONENT = True
+
+touchscreen_ns = cg.esphome_ns.namespace("touchscreen")
+
+Touchscreen = touchscreen_ns.class_("Touchscreen")
+TouchRotation = touchscreen_ns.enum("TouchRotation")
+TouchPoint = touchscreen_ns.struct("TouchPoint")
+TouchListener = touchscreen_ns.class_("TouchListener")
+
+CONF_DISPLAY = "display"
+CONF_TOUCHSCREEN_ID = "touchscreen_id"
+
+
+TOUCHSCREEN_SCHEMA = cv.Schema(
+    {
+        cv.GenerateID(CONF_DISPLAY): cv.use_id(display.DisplayBuffer),
+        cv.Optional(CONF_ON_TOUCH): automation.validate_automation(single=True),
+    }
+)
+
+
+async def register_touchscreen(var, config):
+    disp = await cg.get_variable(config[CONF_DISPLAY])
+    cg.add(var.set_display(disp))
+
+    if CONF_ON_TOUCH in config:
+        await automation.build_automation(
+            var.get_touch_trigger(),
+            [(TouchPoint, "touch")],
+            config[CONF_ON_TOUCH],
+        )