added first mac workflow

a first test...

.github/workflows/build-project-mac.yml

@@ -1,4 +1,4 @@
-name: Linux Nightly
+name: macOS Nightly
 on:
   push:
     #tags:
@@ -33,7 +33,6 @@ jobs:
         if: matrix.os == 'macos-10.15'
         run: |
           python -m pip install --upgrade pip
-          pip3 install pyaudio
           pip3 install psutil
           pip3 install crcengine
           pip3 install pyinstaller
@@ -51,10 +50,6 @@ jobs:
             pip3 install pyaudio
 
 
-          
-
-
-
       - name: Build codec2 Linux
         if: matrix.os == 'macos-10.15'
         working-directory: tnc