[Ryujinx.Graphics.Texture] Address dotnet-format issues (#5375)

* dotnet format style --severity info

Some changes were manually reverted.

* Restore a few unused methods and variables

* Silence dotnet format IDE0060 warnings

* Silence dotnet format IDE0059 warnings

* Address or silence dotnet format CA2208 warnings

* Address most dotnet format whitespace warnings

* Apply dotnet format whitespace formatting

A few of them have been manually reverted and the corresponding warning was silenced

* Format if-blocks correctly

* Add comments to disabled warnings

* Simplify properties and array initialization, Use const when possible, Remove trailing commas

* Address IDE0251 warnings

* Silence IDE0060 in .editorconfig

* Revert "Simplify properties and array initialization, Use const when possible, Remove trailing commas"

This reverts commit 9462e4136c0a2100dc28b20cf9542e06790aa67e.

* dotnet format whitespace after rebase

* First dotnet format pass

* Apply suggestions from code review

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Address review feedback

* Update src/Ryujinx.Graphics.Texture/Astc/AstcDecoder.cs

Co-authored-by: Ac_K <Acoustik666@gmail.com>

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>

src/Ryujinx.Graphics.Texture/Utils/Block.cs

@@ -25,7 +25,7 @@ namespace Ryujinx.Graphics.Texture.Utils
             offset += bits;
         }
 
-        public ulong Decode(ref int offset, int bits)
+        public readonly ulong Decode(ref int offset, int bits)
         {
             ulong value;
             ulong mask = bits == 64 ? ulong.MaxValue : (1UL << bits) - 1;
@@ -52,4 +52,4 @@ namespace Ryujinx.Graphics.Texture.Utils
             return value;
         }
     }
-}
+}