Add in the ability to make custom overrides.

Fixed issues with the CSS in the property inspector
Make it so i can actually write unit tests if i want to

src/FocusVolumeControl/Overrides/MatchType.cs

@@ -0,0 +1,10 @@
+namespace FocusVolumeControl.Overrides
+{
+	public enum MatchType
+	{
+		Equal,
+		StartsWith,
+		EndsWith,
+		Regex,
+	}
+}

src/FocusVolumeControl/Overrides/Override.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FocusVolumeControl.Overrides
+{
+	public class Override
+	{
+		public MatchType MatchType { get; set; }
+		public string WindowQuery { get; set; }
+		public string AudioProcessName { get; set; }
+	}
+}

src/FocusVolumeControl/Overrides/OverrideParser.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FocusVolumeControl.Overrides
+{
+	internal class OverrideParser
+	{
+		public static List<Override> Parse(string raw)
+		{
+			var overrides = new List<Override>();
+
+			if (raw == null)
+			{
+				return overrides;
+			}
+
+			var lines = raw.Split(new[] { "\r\n", "\n", "\r" }, StringSplitOptions.RemoveEmptyEntries);
+
+
+			Override tmp = null;
+
+			foreach (var line in lines)
+			{
+				if (string.IsNullOrEmpty(line) || line.StartsWith("//"))
+				{
+					continue;
+				}
+
+				var split = line.Split(':');
+				if (split.Length > 1)
+				{
+					if (!string.IsNullOrEmpty(tmp?.WindowQuery) && !string.IsNullOrEmpty(tmp?.AudioProcessName))
+					{
+						overrides.Add(tmp);
+					}
+					tmp = new Override();
+
+					if (string.Equals(split[0], "eq", StringComparison.OrdinalIgnoreCase))
+					{
+						tmp.MatchType = MatchType.Equal;
+					}
+					else if (string.Equals(split[0], "start", StringComparison.OrdinalIgnoreCase))
+					{
+						tmp.MatchType = MatchType.StartsWith;
+					}
+					else if (string.Equals(split[0], "end", StringComparison.OrdinalIgnoreCase))
+					{
+						tmp.MatchType = MatchType.EndsWith;
+					}
+					else if (string.Equals(split[0], "regex", StringComparison.OrdinalIgnoreCase))
+					{
+						tmp.MatchType = MatchType.Regex;
+					}
+					else
+					{
+						continue;
+					}
+					tmp.WindowQuery = split[1].Trim();
+				}
+				else if (tmp != null)
+				{
+					tmp.AudioProcessName = split[0].Trim();
+				}
+			}
+
+			if (!string.IsNullOrEmpty(tmp?.WindowQuery) && !string.IsNullOrEmpty(tmp?.AudioProcessName))
+			{
+				overrides.Add(tmp);
+			}
+
+
+			return overrides;
+		}
+	}
+}