code gen should generate controller constructor that returns concret type instead of interface

[TimShi]

Description

Expected Behavior

It should generate constructor that returns the concrete type that implements this interface

func NewExampleFriendsController(r *repository.FriendsRepository) *ExampleFriendsController {

Actual Behavior

Currently, code gen generates controller constructor that returns web.Controller interface.

func NewExampleFriendsController(di exampleFriendsControllerDI) web.Controller {

This makes it hard to inject this specific controller instance into test if there are multiple controllers in the test.

Affected Version

v0.14.0

Steps to Reproduce

Follow the README in examples/database to generate the service based on contract.

Checklist

• I have read the contributing guidelines
• I have verified this does not duplicate an existing issue