Add Heroku add-on

[hoangmirs]

Solve #52

What happened 👀

• Add Heroku addon
• Add Heroku with terraform files and directory
• Update template README and .gitignore

Insight 📝

N/A

Proof Of Work 📹

• Generate the project

• Unit test is passed

[gutakk]

@hoangmirs Why do we need this function?

[hoangmirs]

In remove_heroku_files function, I just remove deploy/heroku, so it still has the empty deploy folder.
I had planned to remove the entire deploy folder, but I think we might have another one in that folder, so I went with this way

[malparty]

@gutakk @hoangmirs
Just as a cross-check, I'm trying to deploy to Heroku and at the terraform plan cmd, I got a small warning (and a note):

Plan: 4 to add, 0 to change, 0 to destroy.
╷
│ Warning: Value for undeclared variable
│
│ The root module does not declare a variable named "redis_plan" but a value was found in file "terraform.tfvars". If you meant to use this value, add a "variable" block to the
│ configuration.
│
│ To silence these warnings, use TF_VAR_... environment variables to provide certain "global" settings to all configurations in your organization. To reduce the verbosity of
│ these warnings, use the -compact-warnings option.
╵

Note: You didn't use the -out option to save this plan, so Terraform can't guarantee to take exactly these actions if you run "terraform apply" now.

It does not seems to be blocker, but I'm still raising it in case it's not showing up in your tests. ;-)

Note that I cannot test the next cmd (terraform apply) as I do not have access to any Heroku organization~

[hoangmirs]

@gutakk @hoangmirs
Just as a cross-check, I'm trying to deploy to Heroku and at the terraform plan cmd, I got a small warning (and a note):

It does not seems to be blocker, but I'm still raising it in case it's not showing up in your tests. ;-)

Note that I cannot test the next cmd (terraform apply) as I do not have access to any Heroku organization~

@malparty Thanks for pointing it out. I removed the redundant redis variable in 6bb3e3b
@gutakk Please fetch this branch again if you wanna add more content

[gutakk]

@gutakk @hoangmirs
Just as a cross-check, I'm trying to deploy to Heroku and at the terraform plan cmd, I got a small warning (and a note):
It does not seems to be blocker, but I'm still raising it in case it's not showing up in your tests. ;-)
Note that I cannot test the next cmd (terraform apply) as I do not have access to any Heroku organization~

@malparty Thanks for pointing it out. I removed the redundant redis variable in 6bb3e3b
@gutakk Please fetch this branch again if you wanna add more content

LGTM