mangoapp: fix not respecting nvctrl option

Fix some uglyness in meson build

Bump version to 0.6.5

bump to v0.6.4

Bump to v0.6.3

Update build-source workflow

workflow: limit 'release' event to 'created' action

Merge branch 'develop' into master

Meson option to have absolute paths in LD_PRELOAD

Use `setenv`instead as `putenv` makes Lutris' wine crash for some rea…

…son (threading?)