[prometheus] Select, media_player, and number prometheus metrics (#7895)

tests/components/prometheus/common.yaml

@@ -78,6 +78,26 @@ lock:
       }
     optimistic: true
 
+select:
+  - platform: template
+    id: template_select1
+    name: "Template select"
+    optimistic: true
+    options:
+      - one
+      - two
+      - three
+    initial_option: two
+
+number:
+  - platform: template
+    id: template_number1
+    name: "Template number"
+    optimistic: true
+    min_value: 0
+    max_value: 100
+    step: 1
+
 prometheus:
   include_internal: true
   relabel:

tests/components/prometheus/test.esp32-ard.yaml

@@ -1 +1,34 @@
 <<: !include common.yaml
+
+i2s_audio:
+  i2s_lrclk_pin: 1
+  i2s_bclk_pin: 2
+  i2s_mclk_pin: 3
+
+media_player:
+  - platform: i2s_audio
+    name: "Media Player"
+    dac_type: external
+    i2s_dout_pin: 18
+    mute_pin: 19
+    on_state:
+      - media_player.play:
+      - media_player.play_media: http://localhost/media.mp3
+      - media_player.play_media: !lambda 'return "http://localhost/media.mp3";'
+    on_idle:
+      - media_player.pause:
+    on_play:
+      - media_player.stop:
+    on_pause:
+      - media_player.toggle:
+      - wait_until:
+          media_player.is_idle:
+      - wait_until:
+          media_player.is_playing:
+      - wait_until:
+          media_player.is_announcing:
+      - wait_until:
+          media_player.is_paused:
+      - media_player.volume_up:
+      - media_player.volume_down:
+      - media_player.volume_set: 50%