Add template-only-bin scripts

[rocketnova]

Ticket

• N/A

Changes

What was added, updated, or removed in this PR.

• Add template-only-bin scripts
• Add empty docker-compose.mock-production.yml

Context for reviewers

Testing instructions, background context, more in-depth details of the implementation, and anything else you'd like to call out or ask reviewers.

This PR adds template-only bash scripts for managing:

• installing the template
• updating the template
• changing the application's name

This PR does not include a separate update-template.sh script in favor of using the download-and-install.sh, which accomplishes the same changes.

It also adds an empty docker-compose.mock-production.yml because this file will get installed as part of #2 and needs to exist otherwise the install script will error.

Testing

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