Zombies!!! (#7509)

* wip

* heal on bite

* more fixes and additions

* don't crash

* Update medicine.yml

* zombie claw item and damage resist

* ignoredcomponents.cs

* Add zombie claw, fix infection, add immunities

* fix

* razzle dazzle

* yaml fix

* Update Content.Server/Disease/DiseaseZombieSystem.cs

Co-authored-by: Moony <moonheart08@users.noreply.github.com>

* Update Content.Server/Disease/DiseaseZombieSystem.cs

Co-authored-by: Moony <moonheart08@users.noreply.github.com>

* Update Content.Server/Disease/DiseaseZombieSystem.cs

Co-authored-by: Moony <moonheart08@users.noreply.github.com>

* Update Content.Server/Disease/DiseaseZombieSystem.cs

Co-authored-by: Moony <moonheart08@users.noreply.github.com>

* sdasadsadsadasd

* Generalize DiseaseProgression.cs

* final final final final final final cope seethe

* Update medicine.yml

* Update Content.Server/Disease/Components/DiseaseZombieComponent.cs

Co-authored-by: mirrorcult <lunarautomaton6@gmail.com>

* Update BloodstreamSystem.cs

* Update Content.Server/Disease/Components/DiseaseZombieComponent.cs

Co-authored-by: mirrorcult <lunarautomaton6@gmail.com>

* Update Content.Server/Disease/DiseaseZombieSystem.cs

Co-authored-by: mirrorcult <lunarautomaton6@gmail.com>

* fixing until i die

* folder + zombietransfer fix

* smol fixe

* the smallest of fixes

* aaaa

* Infection timer buff

Co-authored-by: Moony <moonheart08@users.noreply.github.com>
Co-authored-by: mirrorcult <lunarautomaton6@gmail.com>

Content.Server/Disease/Components/DiseaseBuildupComponent.cs

@@ -0,0 +1,19 @@
+namespace Content.Server.Disease.Components
+{
+    /// <summary>
+    /// The component which records the buildup/progression of an infection
+    /// </summary>
+    [RegisterComponent]
+    public sealed class DiseaseBuildupComponent : Component
+    {
+        /// This could be served to be generalized to allow for multiple
+        /// diseases to build up at once, but it doesn't matter too much.
+
+        /// <summary>
+        /// The current amount of progression that has built up.
+        /// </summary>
+        [DataField("progression")]
+        [ViewVariables(VVAccess.ReadWrite)]
+        public float Progression = 0.00f;
+    }
+}