obs-browser: Fix local macOS build issues

(This also modifies the CI scripts accordingly)

It was difficult to build local obs-browser builds on macOS due to the
way the frameworks work and libraries are linked.  This solves that
issue so that local builds of obs-browser should always work fine.

CI/before-script-osx.sh

@@ -11,4 +11,5 @@ cmake -DENABLE_SPARKLE_UPDATER=ON \
 -DDepsPath=/tmp/obsdeps \
 -DVLCPath=$PWD/../../vlc-master \
 -DBUILD_BROWSER=ON \
+-DBROWSER_DEPLOY=ON \
 -DCEF_ROOT_DIR=$PWD/../../cef_binary_${CEF_BUILD_VERSION}_macosx64 ..