feat(pack): add Duper's Auto Walk

Client-side NeoForge 1.21.1 mod that walks the player forward on a
toggleable keybind. Modrinth reports server_side as unsupported, so
packwiz writes side = "client" and the jar stays off the server.

index.toml

@@ -95,6 +95,11 @@ file = "mods/athena-ctm.pw.toml"
 hash = "f54cf71372645810ce22b0ba68e706139565437150e4cfd22bde4c14606099c4"
 metafile = true
 
+[[files]]
+file = "mods/autowalker.pw.toml"
+hash = "c6afe14535bd7876fae5eaf26295143ffa175ac7766c4ee1b7eebd2e71e9fe35"
+metafile = true
+
 [[files]]
 file = "mods/better-combat.pw.toml"
 hash = "438170e7e704a1b8ed67bf0521dc5d77cdeeaabf6f729dba9f8dfdad75330acf"