make CI build steps more atomic for easier reporting

.github/workflows/main.yml

@@ -25,5 +25,12 @@ jobs:
       - name: Install libs needed for linux build
         run: |
           sudo apt install -y libpsocksxx-dev
-      - name: Build
-        run: platformio run -e tbeam -e heltec -e lora-relay-v1 -e linux
+      - name: Build for tbeam
+        run: platformio run -e tbeam
+      - name: Build for heltec
+        run: platformio run -e heltec
+      - name: Build for lora-relay-v1
+        run: platformio run -e lora-relay-v1 
+      - name: Build for linux
+        run: platformio run -e linux
+