libobs: Fix plugin folder search path case on macOS

linux-jack: Fix conversion from channels to speaker layout

The UI feedback when dropping scene / source items on other parts of the
program indicated that something would happen instead of showing the
"no drop" icon.

UI: Fix projector on other than primary display

Calling showFullScreen after setGeometry puts the projector on the
expected monitor.  Previously (on FreeBSD, at least) it opened on the
primary display.

obs-ffmpeg: Encoder error feedback

Since new NVENC still falls back, try to make the error from ffmpeg
NVENC more actionable for users.

Similar to how outputs can pass errors, add the same functionality for
encoders so that if an output encoder has an error, it is made available
to the output and eventually the UI / user.

deps: lzma: also use .note.GNU-stack on FreeBSD

rtmp-services: Add niconico

mac-syphon: Move the syphon plugin over to ARC

CI: Rewrite new deps paths in obs-ouputs.so

CI: Move clang format check into a seperate github workflow

rtmp-services: Fix memory leak when updating rtmp-custom-service.

obs-outputs: Fix warnings WITH_RTMPS=OFF

libobs/util: Add FreeBSD and Dragonfly support in os_get_executable_path_ptr()

UI: Fix warning compiling with Clang 10

Building with Clang 10 on FreeBSD 13-CURRENT emitted a warning about
logical not (!) applying only to the left hand side of a comparison.
Update the expression to match the style of other flags conditionals.
Verified that object code is the same.

If a projector was created fullscreen, the isFullScreen() call would
fail since the window hasn't been displayed by Qt yet, resulting in the
cursor hiding choice not being applied. This moves the cursor hiding
into the SetMonitor call which is used for all code paths creating a
fullscreen projector, ensuring the setting is applied.

Fixes https://github.com/obsproject/obs-studio/issues/2687

UI: Log global audio devices and their filters

UI: Don't open Studio Mode's "Program" label in a window

UI: Require selected source for Transform shortcut

Closes #2559

rtmp-services: Update Bongacams servers and settings

UI: Fix missing includes

CI: Make processor count consistent

These files appeared to be dependent on their include order and were
missing definitions when files were compiled in a different order.