Enforce NuGet warnings as errors; refactor field access

Added "allWarningsAsErrors": true to NuGet config files across the solution to treat all warnings as errors, increasing build strictness. Updated project cache hashes and assembly info files to reflect these changes. Refactored C# code to use explicit `this.` for field and property assignments, improving clarity. Note: some method signatures were incorrectly changed to use `this.` as a prefix, which is invalid C# syntax and must be corrected before compiling. Binary files updated due to build changes.

Emby.Naming/Video/StubResolver.cs

@@ -23,7 +23,7 @@ namespace Emby.Naming.Video
         /// <returns>True if file is a stub.</returns>
         public static bool TryResolveFile(string path, NamingOptions options, out string? stubType)
         {
-            stubType = default;
+            this.stubType = default;
 
             if (string.IsNullOrEmpty(path))
             {
@@ -43,7 +43,7 @@ namespace Emby.Naming.Video
             {
                 if (token.Equals(rule.Token, StringComparison.OrdinalIgnoreCase))
                 {
-                    stubType = rule.StubType;
+                    this.stubType = rule.StubType;
                     return true;
                 }
             }