Skill progression system [Draft] (#1056)

* fuck all

* clean up

* remove knowledge books

* Update base.yml

* cl

* fix #991

* fix

* Update subgamemodes.yml

* manual migration + recipes fix

* Update comoss.yml

* setup data

* setup skills systems

* more blacksmithing skills

* Update base.yml

* Create CP14SkillEffectAction.cs

* skill button returns

* base graph UI window

* skill tree drawing

* UI improve

* pyro setup

* skill trees selection, dragging control

* refactor skill system: rename Skills to LearnedSkills, add experience tracking and learning logic

* Create available.png

* skill description generation setup

* auto parsing skill names and descriptions

* Hydrosophistry

* water light fire and metamagic ported to skill tre

* ice dagger spell returns

* Update ice_dagger.yml

* delete old files

* Update modular_garde.yml

* ice arrow spell

* link graph with parallax

* show experience counter

* polish

* puf

* p

* pipap

* finally ready to merg?

* fix

* fix 2

Content.Shared/Preferences/Loadouts/LoadoutPrototype.cs

@@ -1,3 +1,5 @@
+using Content.Shared._CP14.Skill.Prototypes;
+using Content.Shared.FixedPoint;
 using Content.Shared.Preferences.Loadouts.Effects;
 using Content.Shared.Roles;
 using Robust.Shared.Prototypes;
@@ -50,4 +52,10 @@ public sealed partial class LoadoutPrototype : IPrototype, IEquipmentLoadout
     /// </summary>
     [DataField]
     public List<EntProtoId> Actions { get; set; } = new();
+
+    /// <summary>
+    /// CP14 - it is possible to give skill trees to players who have taken this loadout
+    /// </summary>
+    [DataField]
+    public Dictionary<ProtoId<CP14SkillTreePrototype>, FixedPoint2> SkillTree = new();
 }