CI: use existing manifest

Modify to use west.yml included in the PR version.
Accordingly, the initialization process has been changed.

Author: soburi

.github/workflows/build.yml

@@ -12,33 +12,34 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          path: Arduino-Zephyr-API
+          path: modules/lib/Arduino-Zephyr-API
 
       - name: Initialize
-        working-directory: Arduino-Zephyr-API
         run: |
-          west init -m https://github.com/zephyrproject-rtos/gsoc-2022-arduino-core.git
+          mkdir manifest
+          cp modules/lib/Arduino-Zephyr-API/west.yml manifest
+          west init -l manifest
           west update
           git clone https://github.com/arduino/ArduinoCore-API.git ArduinoCore-API
           cp -r ArduinoCore-API/api modules/lib/Arduino-Zephyr-API/cores/arduino/.
 
       - name: Build fade
-        working-directory: Arduino-Zephyr-API
+        working-directory: modules/lib/Arduino-Zephyr-API
         run: |
           west build -p -b arduino_nano_33_ble/nrf52840/sense samples/fade
 
       - name: Build i2cdemo
-        working-directory: Arduino-Zephyr-API
+        working-directory: modules/lib/Arduino-Zephyr-API
         run: |
           west build -p -b arduino_nano_33_ble/nrf52840/sense samples/i2cdemo
 
       - name: Build adc
-        working-directory: Arduino-Zephyr-API
+        working-directory: modules/lib/Arduino-Zephyr-API
         run: |
           west build -p -b beagleconnect_freedom/cc1352p7 samples/analog_input
 
       - name: Archive firmware
         uses: actions/upload-artifact@v4
         with:
           name: firmware
-          path: Arduino-Zephyr-API/build/zephyr/zephyr.*
+          path: modules/lib/Arduino-Zephyr-API/build/zephyr/zephyr.*