[Glitch] Move V2 Filter methods under /api/v2 prefix
[Glitch] Move V2 Filter methods under /api/v2 prefix

Port b59ce0a60ff4f90bb16a8c3338ad37218af052b8 to glitch-soc

Signed-off-by: Claire <82b964c50e9d1d222e48cf5046e6484a966a7b07@sitedethib.com>

im-in-space/mastodon,im-in-space/mastodon,glitch-soc/mastodon,im-in-space/mastodon,glitch-soc/mastodon,glitch-soc/mastodon,glitch-soc/mastodon,im-in-space/mastodon