re-add macos plugin to final zip

filter: add bus callback so we log warnings and errors properly, if any

encoder: show device selection for VAAPI only

test: asneeded no longer required

encoder: remove dynamic bitrate update code. shot myself in the foot …

…here..

update copyright dates

Update README.md (#52)

A hardcore example on video processing with a GPU card. Will help the future users save time on trying to figure the hard stuff out.

split audio and video filter

search for libobs via pkgconfig and fallback to find_library

docker: adjust path