actions: add tmate session

Author: Joe7500

.github/workflows/build-kernel.yml

@@ -10,14 +10,19 @@ jobs:
   build:
     runs-on: ubuntu-24.04
     steps:
+    - name: Setup tmate session
+      uses: mxschmitt/action-tmate@v3
+      with:
+        detached: true
+
     - name: Update environment
       run: sudo apt update -y
 
     - name: Install Dependencies
       run: sudo apt install -y git build-essential zip curl
 
     - name: Get script
-      run: curl -o build_kernel.sh -L 
+      run: curl -o build_kernel.sh -L https://raw.githubusercontent.com/Joe7500/valeryn_xiaomi_sm6115/refs/heads/build-actions/build_kernel.sh
 
     - name: Build kernel
       run: bash build_kernel.sh