[tool] add build tool

Author: KevinZonda

.gitignore

@@ -0,0 +1 @@
+release

build.bat

@@ -0,0 +1,46 @@
+@echo off
+echo ===========================
+echo = Go Cross Compile Script =
+echo = by Kevin                =
+echo ===========================
+
+echo -^> Removing old files
+del /s /Q release > nul
+
+SET CGO_ENABLED=0
+echo -^> Compiling AMD64
+SET GOARCH=amd64
+
+SET GOOS=windows
+echo --^> Compiling Windows
+go build -o release\fgit-windows-amd64.exe fgit.go 
+SET GOOS=darwin
+echo --^> Compiling Darwin
+go build -o release\fgit-darwin-amd64 fgit.go 
+SET GOOS=linux
+echo --^> Compiling Linux
+go build -o release\fgit-linux-amd64 fgit.go 
+
+SET GOARCH=386
+echo -^> Compiling 386
+SET GOOS=windows
+echo --^> Compiling Windows
+go build -o release\fgit-windows-386.exe fgit.go 
+SET GOOS=linux
+echo --^> Compiling Linux
+go build -o release\fgit-linux-386 fgit.go 
+
+
+SET GOARCH=arm
+echo -^> Compiling ARM
+SET GOOS=linux
+echo --^> Compiling Linux
+go build -o release\fgit-linux-arm fgit.go 
+
+SET GOARCH=arm64
+echo -^> Compiling ARM64
+SET GOOS=linux
+echo --^> Compiling Linux
+go build -o release\fgit-linux-arm64 fgit.go 
+
+pause