[remote_base] Generate transmit_pronto and transmit_rc6 with no C++ class (#20564)

tests/component_tests/remote_transmitter/config/rc6_pronto.yaml

@@ -0,0 +1,28 @@
+esphome:
+  name: test
+
+esp8266:
+  board: esp01_1m
+
+remote_transmitter:
+  pin: GPIO4
+  carrier_duty_percent: 50%
+
+button:
+  - platform: template
+    name: RC6 one
+    on_press:
+      - remote_transmitter.transmit_rc6:
+          address: 0x00
+          command: 0x0C
+  - platform: template
+    name: RC6 two
+    on_press:
+      - remote_transmitter.transmit_rc6:
+          address: 0x00
+          command: 0x0D
+  - platform: template
+    name: Pronto
+    on_press:
+      - remote_transmitter.transmit_pronto:
+          data: "0000 006D 0001 0000 0015 0016"

tests/component_tests/remote_transmitter/test_rc6_pronto.py

@@ -0,0 +1,41 @@
+"""transmit_rc6 keeps a toggle bit per action, and transmit_pronto sends its string."""
+
+from collections.abc import Callable
+from pathlib import Path
+
+from esphome import automation
+import esphome.codegen as cg
+from esphome.components.remote_base import _protocol_field
+from esphome.const import CONF_TEMPERATURE
+from tests.component_tests.remote_transmitter import protocol_call_bodies
+
+
+def test_rc6_toggle_and_pronto(
+    generate_main: Callable[[str | Path], str],
+    component_config_path: Callable[[str], Path],
+) -> None:
+    main_cpp = generate_main(component_config_path("rc6_pronto.yaml"))
+    bodies = protocol_call_bodies(main_cpp)
+    assert len(bodies) == 3
+    toggle = (
+        "apply_call.data.toggle = []() { static uint8_t toggle; return toggle++; }();"
+    )
+    # Each RC6 action has its own generated function, so its own toggle static.
+    assert toggle in bodies[0]
+    assert toggle in bodies[1]
+    assert (
+        'apply_call.data.data = progmem_string(ESPHOME_F("0000 006D 0001 0000 0015 0016"));'
+        in bodies[2]
+    )
+    assert "delta" not in bodies[2]
+
+
+def test_apply_objects_pass_through() -> None:
+    call = automation.ApplyCall("stop()")
+    assert _protocol_field(call) is call
+    field = automation.ApplyField(
+        CONF_TEMPERATURE, "data.set_temperature({})", cg.float_
+    )
+    assert _protocol_field(field) is field
+    plain = _protocol_field((CONF_TEMPERATURE, "temperature", cg.float_))
+    assert plain.target == "data.temperature = {}"