[Ryujinx.Audio] Address dotnet-format issues (#5362)

* dotnet format style --severity info

Some changes were manually reverted.

* dotnet format analyzers --serverity info

Some changes have been minimally adapted.

* Restore a few unused methods and variables

* Silence dotnet format IDE0060 warnings

* Silence dotnet format IDE0052 warnings

* Address dotnet format CA1816 warnings

* Address or silence dotnet format CA2208 warnings

* Address or silence dotnet format CA2211 warnings

* Address review comments

* 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

* Run dotnet format whitespace after rebase

* Run dotnet format after rebase and remove unused usings

- analyzers
- style
- whitespace

* Add comments to disabled warnings

* Remove a few unused parameters

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

* Start working on disabled warnings

* Fix and silence a few dotnet-format warnings again

* 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

* Fix naming rule violations, remove redundant code and fix build issues

* Apply suggestions from code review

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

* Add trailing commas

* Apply suggestions from code review

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

* Address review feedback

---------

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

src/Ryujinx.Audio/Backends/CompatLayer/Downmixing.cs

@@ -31,18 +31,18 @@ namespace Ryujinx.Audio.Backends.CompatLayer
         private const int Minus6dBInQ15 = (int)(0.501f * RawQ15One);
         private const int Minus12dBInQ15 = (int)(0.251f * RawQ15One);
 
-        private static readonly int[] DefaultSurroundToStereoCoefficients = new int[4]
+        private static readonly int[] _defaultSurroundToStereoCoefficients = new int[4]
         {
             RawQ15One,
             Minus3dBInQ15,
             Minus12dBInQ15,
-            Minus3dBInQ15
+            Minus3dBInQ15,
         };
 
-        private static readonly int[] DefaultStereoToMonoCoefficients = new int[2]
+        private static readonly int[] _defaultStereoToMonoCoefficients = new int[2]
         {
             Minus6dBInQ15,
-            Minus6dBInQ15
+            Minus6dBInQ15,
         };
 
         private const int SurroundChannelCount = 6;
@@ -114,12 +114,12 @@ namespace Ryujinx.Audio.Backends.CompatLayer
 
         public static short[] DownMixStereoToMono(ReadOnlySpan<short> data)
         {
-            return DownMixStereoToMono(DefaultStereoToMonoCoefficients, data);
+            return DownMixStereoToMono(_defaultStereoToMonoCoefficients, data);
         }
 
         public static short[] DownMixSurroundToStereo(ReadOnlySpan<short> data)
         {
-            return DownMixSurroundToStereo(DefaultSurroundToStereoCoefficients, data);
+            return DownMixSurroundToStereo(_defaultSurroundToStereoCoefficients, data);
         }
     }
-}
+}