IMS: Add workflow to rebuild blobs

Change-Id: I65761fea46e6d4129a1a981c3b38890b2939782e
Signed-off-by: Sushrut1101 <guptasushrut@gmail.com>

.github/workflows/build.yml

@@ -0,0 +1,44 @@
+name: Build
+
+env:
+  APKTOOL_VER: 2.9.3
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-java@v3
+      with:
+        distribution: 'adopt-hotspot'
+        java-version: '8'
+
+    - uses: robinraju/release-downloader@v1.8
+      with:
+        repository: 'iBotPeaches/Apktool'
+        tag: 'v${{ env.APKTOOL_VER }}'
+        fileName: 'apktool_${{ env.APKTOOL_VER }}.jar'
+
+    - name: Build ImsService
+      run: |
+        java -jar apktool_${{ env.APKTOOL_VER }}.jar b ImsService
+
+    - name: Build mediatek-telephony-base
+      run: |
+        java -jar apktool_${{ env.APKTOOL_VER }}.jar b mediatek-telephony-base
+
+    - name: Prepare Artifacts
+      run: |
+        mkdir -p out
+        cp ImsService/dist/ImsService.apk out/
+        cp mediatek-telephony-base/dist/mediatek-telephony-base.jar out/
+
+    - uses: actions/upload-artifact@v3
+      with:
+        name: Artifacts
+        path: out