Rename argparse.* to options.*

Seems to be a more appropriate name.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

src/meson.build

@@ -6,7 +6,7 @@ deps = [
 
 srcs = [ files('compton.c', 'win.c', 'c2.c', 'x.c', 'config.c', 'vsync.c', 'utils.c',
                'diagnostic.c', 'string_utils.c', 'render.c', 'kernel.c', 'log.c',
-               'argparse.c')]
+               'options.c')]
 
 cflags = []