refactor: improve codegen to support influx query rewrite (#60)

* build: add goimports to fmt target to remove unused imports
* feat: update codegen template to support returning raw response body
* feat: add support for gunzip-ing response bodies
* refactor: remove unused piece from codegen return values

tools.go

@@ -11,5 +11,6 @@ package influxcli
 
 import (
 	_ "github.com/daixiang0/gci"
+	_ "golang.org/x/tools/cmd/goimports"
 	_ "honnef.co/go/tools/cmd/staticcheck"
 )