To allow more build-time configuration:
- `Makefile` will now pick up `LDFLAGS` from environment variables, and
- locations of configuration files can now be overridden with linker
options.
These are not used for regular Flamenco builds, but do allow studios to
customize where configuration files are stored.
Review: https://projects.blender.org/studio/flamenco/pulls/104200
Change the location where the Worker writes its local files so that it
follows the XDG specification (instead of writing to the current working
directory).
- Linux: `$HOME/.local/share/flamenco`
- Windows: `C:\Users\UserName\AppData\Local\Flamenco`
- macOS: `$HOME/Library/Application Support/Flamenco`
NOTE: The old files will not be loaded any more. This means that if
nothing is done and the new worker is run as-is, it will reregister as a
brand new worker. Move `flamenco-worker-credentials.yaml` and
`flamenco-worker.sqlite` to the new location to avoid this.
