Generate the wiki as part of the generated project

[longnd]

Why

The infrastructure-template is a useful tool for generating infrastructure code for a new project. However, there is no documentation comes with a new generated project. For example, users may not know:

• How to use the newly generated project to set up different environments (using different Terraform Cloud workspaces to map to the same working directory).
• How to start provisioning infrastructure and creating IAM accounts, including the need to use a dummy bot account first.
• And so on.

A wiki should be generated as part of the project, it should contain common information, including (but not limited to) the following:
- [ ] The infrastructure diagram.
- [ ] Instructions for using Terraform Cloud to provide infrastructure for different environments.
- [ ] Instructions for setting up a bot and IAM accounts.
- [ ] Instructions for changing application configurations, environment variables (using Terraform locals instead of Terraform cloud variables), and secrets.
- [ ] Instruction for connecting to remote DB using bastion server.

Who Benefits?

• The project squads can setup a new infrastructure faster, there is less unknown.
• The client has clear documentation to maintain the project