Add VRChat and GitHub packages to Unity project

Assets/Udon/Serialization/OdinSerializer/Utilities/Extensions/StringExtensions.cs

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+//-----------------------------------------------------------------------
+// <copyright file="StringExtensions.cs" company="Sirenix IVS">
+// Copyright (c) 2018 Sirenix IVS
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+// </copyright>
+//-----------------------------------------------------------------------
+
+namespace VRC.Udon.Serialization.OdinSerializer.Utilities
+{
+    using System;
+    using System.Globalization;
+    using System.Text;
+
+    /// <summary>
+    /// String method extensions.
+    /// </summary>
+    public static class StringExtensions
+    {
+        /// <summary>
+        /// Eg MY_INT_VALUE => MyIntValue
+        /// </summary>
+        public static string ToTitleCase(this string input)
+        {
+            var builder = new StringBuilder();
+            for (int i = 0; i < input.Length; i++)
+            {
+                var current = input[i];
+                if (current == '_' && i + 1 < input.Length)
+                {
+                    var next = input[i + 1];
+                    if (char.IsLower(next))
+                    {
+                        next = char.ToUpper(next, CultureInfo.InvariantCulture);
+                    }
+
+                    builder.Append(next);
+                    i++;
+                }
+                else
+                {
+                    builder.Append(current);
+                }
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// Returns true if this string is null, empty, or contains only whitespace.
+        /// </summary>
+        /// <param name="str">The string to check.</param>
+        /// <returns><c>true</c> if this string is null, empty, or contains only whitespace; otherwise, <c>false</c>.</returns>
+        public static bool IsNullOrWhitespace(this string str)
+        {
+            if (!string.IsNullOrEmpty(str))
+            {
+                for (int i = 0; i < str.Length; i++)
+                {
+                    if (char.IsWhiteSpace(str[i]) == false)
+                    {
+                        return false;
+                    }
+                }
+            }
+
+            return true;
+        }
+    }
+}