remove thirdparty diectory, add go.mod for package dependences

.example/database/gdb/mssql/gdb_sqlserver.go

@@ -27,7 +27,7 @@ func init() {
 	})
 	db, _ = gdb.New()
 
-	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/frame")
+	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/frame")
 	//db = g.Database()
 
 	//gdb.SetConfig(gdb.ConfigNode {

.example/database/gdb/mysql/gdb.go

@@ -26,7 +26,7 @@ func init() {
 	})
 	db, _ = gdb.New()
 
-	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/frame")
+	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/frame")
 	//db = g.Database()
 
 	//gdb.SetConfig(gdb.ConfigNode {

.example/database/gdb/oracle/gdb.go

@@ -26,7 +26,7 @@ func init() {
 	})
 	db, _ = gdb.New()
 
-	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/geg/frame")
+	//gins.Config().SetPath("/home/john/Workspace/Go/GOPATH/src/github.com/gogf/gf/.example/frame")
 	//db = g.Database()
 
 	//gdb.SetConfig(gdb.ConfigNode {

.example/database/gdb/sqlite/sqlite.go

@@ -1,7 +1,7 @@
 package main
 
 //import (
-//    _ "github.com/gogf/gf/internal/thirdparty/github.com/mattn/go-sqlite3"
+//    _ "github.com/mattn/go-sqlite3"
 //    "github.com/gogf/gf/database/gdb"
 //    "github.com/gogf/gf/frame/g"
 //    "fmt"