Logger and Configuration Refactoring (#573)

* Logging: Refactor log targets into Ryujinx.Common

* Logger: Implement JSON Log Target

* Logger: Optimize Console/File logging targets

Implement a simple ObjectPool to pool up StringBuilders to avoid causing excessive GCing of gen1/2 items when large amounts of log entries are being generated.

We can also pre-determine the async overflow action at initialization time, allowing for an easy optimization in the message enqueue function, avoiding a number of comparisons.

* Logger: Implement LogFormatters

* Config: Refactor configuration file and loading

* Config: Rename to .jsonc to avoid highlighting issues in VSC and GitHub

* Resolve style nits

* Config: Resolve incorrect default key binding

* Config: Also update key binding default in schema

* Tidy up namespace imports

* Config: Update CONFIG.md to reflect new Config file

Ryujinx.Common/HexUtils.cs

@@ -1,90 +0,0 @@
-using System;
-using System.Text;
-
-namespace Ryujinx.Common
-{
-    public static class HexUtils
-    {
-        private static readonly char[] HexChars = "0123456789ABCDEF".ToCharArray();
-
-        private const int HexTableColumnWidth = 8;
-        private const int HexTableColumnSpace = 3;
-
-        // Modified for Ryujinx
-        // Original by Pascal Ganaye - CPOL License
-        // https://www.codeproject.com/Articles/36747/Quick-and-Dirty-HexDump-of-a-Byte-Array
-        public static string HexTable(byte[] bytes, int bytesPerLine = 16)
-        {
-            if (bytes == null)
-            {
-                return "<null>";
-            }
-
-            int bytesLength = bytes.Length;
-
-            int firstHexColumn =
-                  HexTableColumnWidth
-                + HexTableColumnSpace;
-
-            int firstCharColumn = firstHexColumn
-                + bytesPerLine * HexTableColumnSpace
-                + (bytesPerLine - 1) / HexTableColumnWidth
-                + 2;
-
-            int lineLength = firstCharColumn
-                + bytesPerLine
-                + Environment.NewLine.Length;
-
-            char[] line = (new String(' ', lineLength - Environment.NewLine.Length) + Environment.NewLine).ToCharArray();
-
-            int expectedLines = (bytesLength + bytesPerLine - 1) / bytesPerLine;
-
-            StringBuilder result = new StringBuilder(expectedLines * lineLength);
-
-            for (int i = 0; i < bytesLength; i += bytesPerLine)
-            {
-                line[0] = HexChars[(i >> 28) & 0xF];
-                line[1] = HexChars[(i >> 24) & 0xF];
-                line[2] = HexChars[(i >> 20) & 0xF];
-                line[3] = HexChars[(i >> 16) & 0xF];
-                line[4] = HexChars[(i >> 12) & 0xF];
-                line[5] = HexChars[(i >>  8) & 0xF];
-                line[6] = HexChars[(i >>  4) & 0xF];
-                line[7] = HexChars[(i >>  0) & 0xF];
-
-                int hexColumn  = firstHexColumn;
-                int charColumn = firstCharColumn;
-
-                for (int j = 0; j < bytesPerLine; j++)
-                {
-                    if (j > 0 && (j & 7) == 0)
-                    {
-                        hexColumn++;
-                    }
-
-                    if (i + j >= bytesLength)
-                    {
-                        line[hexColumn]     = ' ';
-                        line[hexColumn + 1] = ' ';
-                        line[charColumn]    = ' ';
-                    }
-                    else
-                    {
-                        byte b = bytes[i + j];
-
-                        line[hexColumn]     = HexChars[(b >> 4) & 0xF];
-                        line[hexColumn + 1] = HexChars[b & 0xF];
-                        line[charColumn]    = (b < 32 ? '·' : (char)b);
-                    }
-
-                    hexColumn += 3;
-                    charColumn++;
-                }
-
-                result.Append(line);
-            }
-
-            return result.ToString();
-        }
-    }
-}