[i2s_audio] Move test bus into a shared package and give fixtures unique ids (#16793)

tests/components/resampler/common.yaml

@@ -1,13 +1,9 @@
-i2s_audio:
-  i2s_lrclk_pin: ${lrclk_pin}
-  i2s_bclk_pin: ${bclk_pin}
-  i2s_mclk_pin: ${mclk_pin}
-
 speaker:
   - platform: i2s_audio
-    id: speaker_id
+    id: resampler_i2s_speaker_id
+    i2s_audio_id: i2s_audio_bus
     dac_type: external
     i2s_dout_pin: ${dout_pin}
   - platform: resampler
     id: resampler_speaker_id
-    output_speaker: speaker_id
+    output_speaker: resampler_i2s_speaker_id

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

@@ -1,10 +1,8 @@
 substitutions:
-  lrclk_pin: GPIO4
-  bclk_pin: GPIO5
-  mclk_pin: GPIO15
-  dout_pin: GPIO14
+  dout_pin: GPIO21
 
 packages:
   spi: !include ../../test_build_components/common/spi/esp32-idf.yaml
+  i2s_audio: !include ../../test_build_components/common/i2s_audio/esp32-idf.yaml
 
 <<: !include common.yaml

tests/components/resampler/test.esp32-s3-idf.yaml

@@ -1,7 +1,7 @@
 substitutions:
-  lrclk_pin: GPIO4
-  bclk_pin: GPIO5
-  mclk_pin: GPIO6
-  dout_pin: GPIO7
+  dout_pin: GPIO16
+
+packages:
+  i2s_audio: !include ../../test_build_components/common/i2s_audio/esp32-s3-idf.yaml
 
 <<: !include common.yaml