make all python files executable and standardize interpreter

examples/device/audio_4_channel_mic/src/plot_audio_samples.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np

examples/device/audio_4_channel_mic_freertos/src/plot_audio_samples.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np

examples/device/audio_test/src/plot_audio_samples.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np

examples/device/audio_test_freertos/src/plot_audio_samples.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np

examples/device/audio_test_multi_rate/src/plot_audio_samples.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np

examples/device/hid_generic_inout/hid_test.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Install python3 HID package https://pypi.org/project/hid/
 import hid
 

examples/device/uac2_speaker_fb/src/audio_debug.py

@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 # Install python3 HID package https://pypi.org/project/hid/
 # Install python3 matplotlib package https://pypi.org/project/matplotlib/