gozero template (#147)

* model/rpc generate code from template cache

* delete unused(deprecated) code

* support template init|update|clean|revert

* model: return the execute result for insert and update operation

* // deprecated: containsAny

* add template test

* add default buildVersion

* update build version

tools/goctl/model/sql/gen/vars.go

@@ -14,8 +14,13 @@ func genVars(table Table, withCache bool) (string, error) {
 		keys = append(keys, v.VarExpression)
 	}
 	camel := table.Name.ToCamel()
+	text, err := util.LoadTemplate(category, varTemplateFile, template.Vars)
+	if err != nil {
+		return "", err
+	}
+
 	output, err := util.With("var").
-		Parse(template.Vars).
+		Parse(text).
 		GoFmt(true).
 		Execute(map[string]interface{}{
 			"lowerStartCamelObject": stringx.From(camel).UnTitle(),