samples: Update document to use arduino-core snippet

Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>

Author: soburi

samples/analog_input/README.rst

@@ -18,7 +18,7 @@ Building and Running
 Build and flash analog_input sample as follows,
 
 ```sh
-$> west build -p -b arduino_nano_33_ble sample/analog_input/
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/analog_input/
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/attach_interrupt/README.rst

@@ -14,7 +14,7 @@ Building and Running
 Build and flash attachInterrupt sample as follows,
 
 ```sh
-$> west build  -p -b arduino_nano_33_ble samples/basic/attach_interrupt/ -DZEPHYR_EXTRA_MODULES=/home/$USER/zephyrproject/modules/lib/Arduino-Core-Zephyr
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/basic/attach_interrupt/
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/blinky_arduino/README.rst

@@ -23,7 +23,7 @@ Building and Running
 Build and flash Blinky as follows,
 
 ```sh
-$> west build  -p -b arduino_nano_33_ble samples/blinky_arduino/ -DZEPHYR_EXTRA_MODULES=/home/$USER/zephyrproject/modules/lib/Arduino-Core-Zephyr
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/blinky_arduino/
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/button_press_led/README.rst

@@ -22,7 +22,7 @@ Building and Running
 Build and flash as follows,
 
 ```sh
-$> west build  -p -b arduino_nano_33_ble samples/button_press_led -DZEPHYR_EXTRA_MODULES=/home/$USER/zephyrproject/modules/lib/Arduino-Core-Zephyr
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/button_press_led
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/fade/README.rst

@@ -15,7 +15,7 @@ Building and Running
 Build and flash Fade sample as follows,
 
 ```sh
-$> west build  -p -b arduino_nano_33_ble samples/basic/fade/ -DZEPHYR_EXTRA_MODULES=/home/$USER/zephyrproject/modules/lib/Arduino-Core-Zephyr
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/basic/fade/
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/hello_arduino/README.rst

@@ -18,6 +18,7 @@ This application can be built and executed on QEMU as follows:
    :zephyr-app: samples/hello_world
    :host-os: unix
    :board: qemu_x86
+   :snippets: arduino-core
    :goals: run
    :compact:
 

samples/i2cdemo/README.rst

@@ -20,7 +20,7 @@ Building and Running
 Build and flash Blinky as follows,
 
 ```sh
-$> west build -p -b arduino_nano_33_ble samples/i2cdemo
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/i2cdemo
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/serial_event/README.rst

@@ -14,7 +14,7 @@ Building and Running
 Build and flash serial_event sample as follows,
 
 ```sh
-$> west build -p -b arduino_nano_33_ble sample/serial_event/
+$> west build -p -S arduino-core -b arduino_nano_33_ble samples/serial_event/
 
 $> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
 ```

samples/threads_arduino/README.rst

@@ -41,6 +41,7 @@ For example, to build this sample for :ref:`arduino_nano_33_ble`:
 .. zephyr-app-commands::
    :zephyr-app: samples/basic/arduino-threads
    :board: arduino_nano_33_ble
+   :snippets: arduino-core
    :goals: build flash
    :compact: