Refactor CI workflow and replace DistinctExample with Distinct example for improved clarity and consistency

Author: rzeldent

.github/workflows/main.yml

@@ -4,35 +4,21 @@ jobs:
   build:
     name: Build Examples
     runs-on: ubuntu-latest
-    env:
-      pio-env: 'esp32dev'
-    strategy:
-      matrix:
-        example: [
-          'Blink/Blink.cpp', 
-          'Do/Do.cpp', 
-          'FromArray/FromArray.cpp', 
-          'FromProperty/FromProperty.cpp', 
-          'FromSerialPort/FromSerialPort.cpp', 
-          'FromString/FromString.cpp', 
-          'GlobalDefined/GlobalDefined.cpp', 
-          'Reduce/Reduce.cpp',
-          'ThrottleExample/ThrottleExample.cpp',
-          'UltrasonicExample/UltrasonicExample.cpp',
-          'AccelerometerExample/AccelerometerExample.cpp',
-          'RotaryEncoderExample/RotaryEncoderExample.cpp',
-          'PIDTemperatureControl/PIDTemperatureControl.cpp',
-          'PIDMotorSpeedControl/PIDMotorSpeedControl.cpp',
-          'DistinctExample/DistinctExample.cpp'
-        ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
       - name: Set up python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: '3.x'
-          architecture: 'x64'
       - name: Install PlatformIO
         run: python -m pip install platformio
       - name: Build firmware
-        run: pio ci --lib="." --board ${{env.pio-env}}  "examples/${{matrix.example}}"
+        run: pio run