feat: add validation for module and namespace names

[DevelopmentCats]

Closes #

Description

add validation for module and namespace names to ensure they contain only alphanumeric characters and hyphens

Type of Change

• New module
• Bug fix
• Feature/enhancement
• Documentation
• Other

Testing & Validation

• Tests pass (bun test)
• Code formatted (bun run fmt)
• Changes tested locally

[Copilot]

Pull Request Overview

This PR adds validation for module, template, and namespace names to ensure they contain only alphanumeric characters and hyphens. This validation helps maintain consistent naming conventions across the codebase.

Key changes:

• Added a regular expression pattern to validate naming conventions
• Implemented validation checks in resource subdirectory and namespace validation functions
• Added descriptive error messages for invalid character usage

Comments suppressed due to low confidence (1)

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[Parkreiner]

Talked it over with Atif, and just because we haven't even announced this module, we're just going to "unpublish" the old version by changing the namespace