Enforce a mandatory resourcePrefix parameter

[glennmusa]

Description

This change:

• makes resourcePrefix a mandatory parameter
• removes deployment().name as a seed for resource names and uniqueness
• uses resourcePrefix for resource names
• uses resourcePrefix + utcNow() to generates uniqueness
• updates Azure DevOps pipelines to ensure a resourcePrefix parameter is supplied to deployment commands
• updates documentation to inform users that this parameter is now mandatory and used for naming

Issue reference

The issue this PR will close: #552

Checklist

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

• All acceptance criteria in the backlog item are met
• The documentation is updated to cover any new or changed features
• Manual tests have passed
• Relevant issues are linked to this PR

[glennmusa]

Was seeing if a new branch would kickoff the pipelines, doesn't appear so. Closing.