[All] Add README.md

Author: Linwenxuan04

Lagrange.Core.sln

@@ -20,6 +20,13 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Core", "Core", "{798B7680-2
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lagrange.Proto.Runner", "Lagrange.Proto.Runner\Lagrange.Proto.Runner.csproj", "{D8B893D8-44B1-47E8-8513-9E3E1F9FD391}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{3C682B4B-3C8D-4D4A-AF0D-8E188D421605}"
+	ProjectSection(SolutionItems) = preProject
+		README.md = README.md
+		Proto.md = Proto.md
+		OneBot.md = OneBot.md
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU

Lagrange.Proto.Runner/Program.cs

@@ -1,4 +1,4 @@
-using System.Runtime.CompilerServices;
+using System.Buffers;
 using Lagrange.Proto.Primitives;
 using Lagrange.Proto.Serialization;
 
@@ -8,7 +8,7 @@ internal static class Program
 {
     private static void Main(string[] args)
     {
-        var bufferWriter = new SegmentBufferWriter();
+        var bufferWriter = new ArrayBufferWriter<byte>();
 
         var writer = new ProtoWriter(bufferWriter);
         var test = new Test
@@ -35,7 +35,8 @@ private static void Main(string[] args)
         Test.SerializeHandler(test, writer);
         writer.Flush();
 
-        Console.WriteLine(Convert.ToHexString(bufferWriter.CreateReadOnlyMemory().Span));
+        Console.WriteLine(Convert.ToHexString(bufferWriter.WrittenSpan));
+        bufferWriter.Clear();
     }
 }
 

Lagrange.Proto.Runner/SegmentBufferWriter.cs

@@ -0,0 +1,53 @@
+## Lagrange.Proto
+
+### The Blazing-fast Code-first C# Google Protocol Buffer Serializer
+
+### Overview
+
+ + Low memory allocation
+ + AOT Friendly using Roslyn's Source Generators
+ + Extreme-fast Serialization
+ + x86-64 SIMD Support for the VarInt Encoding
+ + Supported C# Type
+   + string, byte[], ReadOnlyMemory<byte> (Length-Delimited)
+   + bool, sbyte, byte, short, ushort, int, uint, long, ulong (VarInt)
+   + float, double (Fixed32, Fixed64)
+   + ProtoPackable (nested object for Length-Delimited)
+   + List\<T>, T[], ReadOnlyCollection\<T> (repeated field)
+   + IDictionary\<TKey, TValue> (map field)
+   + Nullable\<T> (optional field)
+   + Enum with valid underlying type (VarInt)
+
+### Usage
+```csharp
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+[ProtoPackable]
+public class Person
+{
+    [ProtoMember(1)] public string Name { get; set; }
+   
+    [ProtoMember(2)] public int Age { get; set; }
+    
+    [ProtoMember(3)] public List<string> Hobbies { get; set; }
+}
+```
+
+After defining the class, you can serialize and deserialize it using the `ProtoSerializer` class.
+
+```csharp
+var result = ProtoSerializer.Serialize(new Person
+{
+    Name = "John Doe",
+    Age = 30,
+    Hobbies = new List<string> { "Reading", "Traveling" }
+});
+Console.WriteLine($"Serialized: {BitConverter.ToString(resutl)}");
+var person = ProtoSerializer.Deserialize<Person>(result.AsSpan());
+Console.WriteLine($"Name: {person.Name}, Age: {person.Age}");
+Console.WriteLine($"Hobbies: {string.Join(", ", person.Hobbies)}");
+```
+