add the ability to strip the debug symbols for smaller binaries on mac and linux

.github/workflows/release.yml

@@ -28,6 +28,9 @@ jobs:
           command: build
           args: --release --all --features=extra
 
+      - name: Strip release binary (linux)
+        run: strip "target/${{ matrix.target }}/release/nu*"          
+
       - name: Create output directory
         run: mkdir output
 
@@ -70,6 +73,9 @@ jobs:
           command: build
           args: --release --all --features=extra
 
+      - name: Strip release binary (macos)
+        run: strip "target/${{ matrix.target }}/release/nu*"          
+
       - name: Create output directory
         run: mkdir output