Add means implicit use attributes

Author: cheese3660

src/PatchManager.SassyPatching/Attributes/SassyConstantAttribute.cs

@@ -1,6 +1,9 @@
-namespace PatchManager.SassyPatching.Attributes;
+using JetBrains.Annotations;
+
+namespace PatchManager.SassyPatching.Attributes;
 
 [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
+[MeansImplicitUse]
 public class SassyConstantAttribute : Attribute
 {
     public string ConstantName;

src/PatchManager.SassyPatching/Attributes/SassyLibraryAttribute.cs

@@ -1,9 +1,12 @@
-namespace PatchManager.SassyPatching.Attributes;
+using JetBrains.Annotations;
+
+namespace PatchManager.SassyPatching.Attributes;
 
 /// <summary>
 /// Represents a builtin (C#) library for the sassy patcher execution engine
 /// </summary>
 [AttributeUsage(AttributeTargets.Class)]
+[MeansImplicitUse]
 public class SassyLibraryAttribute : Attribute
 {
     /// <summary>

src/PatchManager.SassyPatching/Attributes/SassyMethodAttribute.cs

@@ -1,10 +1,13 @@
-namespace PatchManager.SassyPatching.Attributes;
+using JetBrains.Annotations;
+
+namespace PatchManager.SassyPatching.Attributes;
 
 /// <summary>
 /// Defines this as a method for sassy patcher, it can define any argument type it wants, and reflection will be used to convert them at runtime
 /// Method overloading is not allowed
 /// </summary>
 [AttributeUsage(AttributeTargets.Method)]
+[MeansImplicitUse]
 public class SassyMethodAttribute : Attribute
 {
     /// <summary>