Refactor hooking API

This completely changes how method patching works under the hood. Unlike
the previous API (`Hook.HookMethod`), the new API (`Hook.Patch`)
generates a Harmony patch method at runtime, using IL generation.

This fixes methods with ByRef (out/ref) parameters getting silently corrupted
due to the ByRef semantics being lost when passed through the `object[] __args`
parameter.

This new API also makes it possible to:
  - modify parameters (including ByRef params)
  - change the return value to `null` (old API would use `return nil`
    for Harmony control flow)
  - prevent execution of the original method (and other harmony
    patches), independently of modifying the return value

Barotrauma/BarotraumaClient/MacClient.csproj

@@ -134,6 +134,7 @@
     <PackageReference Include="MonoMod.Common" Version="22.5.1.1" />
     <PackageReference Include="NVorbis" Version="0.8.6" />
     <PackageReference Include="RestSharp" Version="106.13.0" />
+    <PackageReference Include="Sigil" Version="5.0.0" />
   </ItemGroup>
 
   <!-- Sourced from https://stackoverflow.com/a/45248069 -->
@@ -224,4 +225,4 @@
   </PropertyGroup>
   <Import Project="../BarotraumaShared/DeployGameAnalytics.props" />
 
-</Project>
+</Project>