Extend ST7789V component to support additional displays (#3651)

Co-authored-by: definitio <37266727+definitio@users.noreply.github.com>

tests/test1.yaml

@@ -2366,6 +2366,7 @@ display:
     lambda: |-
       it.rectangle(0, 0, it.get_width(), it.get_height());
   - platform: st7789v
+    model: TTGO TDisplay 135x240
     cs_pin: GPIO5
     dc_pin: GPIO16
     reset_pin: GPIO23