feat: Generate CloudFormation and Terraform docs files via AVD docs generator

[reedloden]

Rather than rely on manual creation of CloudFormation.md and Terraform.md, generate them the same way as docs.md via the avd_generator program.

[reedloden]

To be clear, this is not yet working properly. Just wanted to push this up for comments. Once it's working correctly, I'll regenerate all the files and include in this PR (unless that should be done as a separate PR after this change lands).

[owenrumney]

Hey @reedloden - I didn't want to push directly to your branch so here is the result of some fiddling... thanks for doing this, needed doing

Terraform Template

var terraformMarkdownTemplate = `
{{ .Resolution }}

{{ if .Terraform.GoodExamples }}{{ range .Terraform.GoodExamples }}` + "```hcl" + `{{ . }}
` + "```" + `
{{ end}}{{ end }}
{{ if .Terraform.Links }}#### Remediation Links{{ range .Terraform.Links }}
 - {{ . }}
{{ end}}{{ end }}
`

CloudFormation Template

var cloudformationMarkdownTemplate = `
{{ .Resolution }}

{{ if .CloudFormation.GoodExamples }}{{ range .CloudFormation.GoodExamples }}` + "```yaml" + `{{ . }}
` + "```" + `
{{ end}}{{ end }}
{{ if .CloudFormation.Links }}#### Remediation Links{{ range .CloudFormation.Links }}
 - {{ . }}
{{ end}}{{ end }}
`

[reedloden]

@owenrumney Thanks! I had to make a slight tweak to the CloudFormation template, as the --- kept getting put right next to the yaml, but otherwise, works great. I've updated my branch and also ran make docs. Let me know if you'd prefer the docs be handled in a separate PR.

[reedloden]

I do see some cases where the existing docs may have been slightly better. I'm a bit time-constrained right now to go through each one, but feel free to make any necessary changes and push to my branch.

[owenrumney]

Hey @reedloden - I've been away on hols, I'll look at this today and just push it. Thanks for the efforts