Crawling Fixes 1: Dragons and Borgs can't do the worm. (#39084)

* Init Commit

* Remove unused code, fix stun visuals bug

* Update Content.Shared/Stunnable/SharedStunSystem.cs

* Some initial changes

* first batch of changes

* Commit

* One line cleanup

* KnockdownStatusEffect ain't worth it.

* Fix 2 bugs

* Fixes

* Remove that actually,

* Commit

* Better solution

* Alright final commit I think

* Add better remarks

* How the fuck did this not get pushed???

* Wait no why was my ryder trying to push that??? I didn't make that change! DON'T DO THAT!!!

* Review

* Don't log that

---------

Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>
Co-authored-by: ScarKy0 <106310278+ScarKy0@users.noreply.github.com>

Content.Shared/Stunnable/KnockdownStatusEffectComponent.cs

@@ -6,4 +6,22 @@ namespace Content.Shared.Stunnable;
 /// Knockdown as a status effect.
 /// </summary>
 [RegisterComponent, NetworkedComponent, Access(typeof(SharedStunSystem))]
-public sealed partial class KnockdownStatusEffectComponent : Component;
+public sealed partial class KnockdownStatusEffectComponent : Component
+{
+    /// <summary>
+    /// Should this knockdown only affect crawlers?
+    /// </summary>
+    /// <remarks>
+    /// If your status effect doesn't come paired with <see cref="StunnedStatusEffectComponent"/>
+    /// Or if your status effect doesn't whitelist itself to only those with <see cref="CrawlerComponent"/>
+    /// Then you need to set this to true.
+    /// </remarks>
+    [DataField]
+    public bool Crawl;
+
+    /// <summary>
+    /// Should we drop items when we fall?
+    /// </summary>
+    [DataField]
+    public bool Drop = true;
+}