feat: add customizable resource naming with snippymcplab branding

[dbarkol]

• Replace random resourceToken with fixed 'snippymcplab' identifier
• Add optional nameSuffix parameter for lab/cohort identification
• Auto-generate 8-char suffix when nameSuffix not provided
• Update all resource names to use new naming pattern
• Handle special cases: storage account and task hub (no hyphens)
• Add NAME_SUFFIX environment variable support in parameters

Resource naming examples:

• With suffix: func-api-snippymcplab-56093778
• Auto-gen: func-api-snippymcplab-a1b2c3d4
• Storage: stsnippymcplab56093778 (no hyphens)
• Task Hub: taskhubsnippymcplab56093778 (no hyphens)

All names validated and within Azure resource limits.

Purpose

• ...

Does this introduce a breaking change?

[ ] Yes
[ ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information