[remote_transmitter] Queue RMT transmissions instead of blocking the main loop

tests/components/remote_transmitter/esp32-common.yaml

@@ -5,6 +5,8 @@ remote_transmitter:
     non_blocking: true
     clock_resolution: ${clock_resolution}
     rmt_symbols: ${rmt_symbols}
+    queue_depth: 4
+    max_pending: 8
 
 packages:
   buttons: !include common-buttons.yaml

tests/components/remote_transmitter/validate-queue-depth-1.esp32-idf.yaml

@@ -0,0 +1,12 @@
+substitutions:
+  pin: GPIO2
+
+remote_transmitter:
+  - id: xmitr
+    pin: ${pin}
+    carrier_duty_percent: 50%
+    non_blocking: true
+    queue_depth: 1
+
+packages:
+  buttons: !include common-buttons.yaml