Add waveland snapping (#95)

Reviewed-on: #95
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

src/game_settings.rs

@@ -66,6 +66,8 @@ pub struct FighterSettingsCommon {
     pub sakurai_angle_high_knockback_angle: FGi32,
     /// past this threshold, the knockback is considered high, so it will use [sakurai_angle_high_knockback_angle]
     pub sakurai_angle_knockback_threshold: FGi32,
+
+    pub waveland_snap_distance: FGi32,
 }
 #[derive(Reflect, Serialize, Deserialize, Clone)]
 #[reflect(opaque)]