add zephyr sdk

.github/workflows/build.yml

@@ -12,8 +12,19 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install West
+      - name: Install Zephyr SDK
         run: |
+          wget -q https://github.com/zephyrproject-rtos/sdk-ng/releases/download/v0.16.4/zephyr-sdk-0.16.4_linux-x86_64_minimal.tar.xz
+          tar xf zephyr-sdk-0.16.4_linux-x86_64_minimal.tar.xz -C ~/
+          ~/zephyr-sdk-0.16.4/setup.sh -c -t arm-zephyr-eabi
+
+      - name: Install Dependencies + West
+        run: |
+          sudo apt install --no-install-recommends git cmake ninja-build gperf \
+            ccache dfu-util device-tree-compiler wget \
+            python3-dev python3-pip python3-setuptools python3-tk python3-wheel xz-utils file \
+            make gcc gcc-multilib g++-multilib libsdl2-dev libmagic1
+
           pip3 install west
 
       - name: Initialize Zephyr Workspace
@@ -23,6 +34,7 @@ jobs:
           cd ..
           west init -l ${PROJDIR_}
           west update --narrow -o=--depth=1
+          pip3 install -r zephyr/scripts/requirements.txt
           west build -b nrf7002dk_nrf5340_cpuapp --pristine=always ${PROJDIR_} \
             -- \
             -DCONFIG_MEMFAULT_NCS_PROJECT_KEY=\"1234\"