Profiles - Reworked profile system

Sidebar - Redesigned sidebar with customizable categories
Profiles - Added the ability to configure custom profile icons
Profiles - Added the ability to activate multiple profiles for modules at once
Profiles - Added the ability to create profiles for no modules
Profiles - Added the ability to suspend a profile or an entire category
Profiles - Added profile activation conditions
Profiles - Added file-based importing/exporting
Profile editor - Condensed UI, removed tabs 
Profile editor - Disable condition operators until a left-side is picked

src/Artemis.Core/JsonConverters/StreamConverter.cs

@@ -0,0 +1,45 @@
+using System;
+using System.IO;
+using Newtonsoft.Json;
+
+namespace Artemis.Core.JsonConverters
+{
+    /// <inheritdoc />
+    public class StreamConverter : JsonConverter<Stream>
+    {
+        #region Overrides of JsonConverter<Stream>
+
+        /// <inheritdoc />
+        public override void WriteJson(JsonWriter writer, Stream? value, JsonSerializer serializer)
+        {
+            if (value == null)
+            {
+                writer.WriteNull();
+                return;
+            }
+
+            using MemoryStream memoryStream = new();
+            value.Position = 0;
+            value.CopyTo(memoryStream);
+            writer.WriteValue(memoryStream.ToArray());
+        }
+
+        /// <inheritdoc />
+        public override Stream? ReadJson(JsonReader reader, Type objectType, Stream? existingValue, bool hasExistingValue, JsonSerializer serializer)
+        {
+            if (reader.Value is not string base64)
+                return null;
+
+            if (existingValue == null || !hasExistingValue || !existingValue.CanRead)
+                return new MemoryStream(Convert.FromBase64String(base64));
+
+            using MemoryStream memoryStream = new(Convert.FromBase64String(base64));
+            existingValue.Position = 0;
+            memoryStream.CopyTo(existingValue);
+            existingValue.Position = 0;
+            return existingValue;
+        }
+
+        #endregion
+    }
+}