[mitsubishi_cn105] Add climate component for Mitsubishi A/C units with CN105 connector (Part 1) (#15315)

Co-authored-by: J. Nick Koston <nick+github@koston.org>

tests/components/mitsubishi_cn105/common.yaml

@@ -0,0 +1,4 @@
+climate:
+  - platform: mitsubishi_cn105
+    name: "AC Test"
+    uart_id: uart_bus

tests/components/mitsubishi_cn105/test.esp32-idf.yaml

@@ -0,0 +1,4 @@
+packages:
+  uart: !include ../../test_build_components/common/uart_9600_even/esp32-idf.yaml
+
+<<: !include common.yaml

tests/components/mitsubishi_cn105/test.esp8266-ard.yaml

@@ -0,0 +1,4 @@
+packages:
+  uart: !include ../../test_build_components/common/uart_9600_even/esp8266-ard.yaml
+
+<<: !include common.yaml

tests/components/mitsubishi_cn105/test.rp2040-ard.yaml

@@ -0,0 +1,4 @@
+packages:
+  uart: !include ../../test_build_components/common/uart_9600_even/rp2040-ard.yaml
+
+<<: !include common.yaml