Add pulsing effect when invulnerable/intangible, make airdodge make the player intangible. (#75)

Reviewed-on: #75
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

src/game_settings.rs

@@ -42,6 +42,9 @@ pub struct FighterSettingsCommon {
     pub leave_ground_ecb_frame_lock_duration: u32,
     pub platform_pass_platform_ignore_duration_frames: u32,
     pub platform_pass_initial_downwards_velocity: FGi32,
+
+    pub intangible_color: Color,
+    pub intangible_pulse_duration: u32,
 }
 #[derive(Reflect, Serialize, Deserialize, Clone)]
 #[reflect(opaque)]