Complex Environmental Name Replacements

[Breanna-Stryker]

Description

Change environmental replacement options to regex capture groups

• Added Regex Substitution in Place of flat replace
• Added function to iterate matching groups
• Updated templates to match new syntax

Issue reference

The issue this PR will close: #156

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles or validates correctly
• BASH scripts have been validated using shellcheck
• All tests pass (manual and automated)
• The documentation is updated to cover any new or changed features
• Markdown files have been linted using the recommended linter. (See .vscode/extensions.json.)
• Relevant issues are linked to this PR

[glennmusa]

Looks like we can update -eastus- in all the *.front.json with -${env:MLZ_LOCATION}- too, right?

[Breanna-Stryker]

Looks like we can update -eastus- in all the *.front.json with -${env:MLZ_LOCATION}- too, right?

You're right! Done!