feat: fetch services offered in a facility

[KathurimaKimathi]

• fetches all services if no facility is provided. Else, return the services associated with the provided facility

Review Checklist

Summary*

• fix: Bug fix for Add the items tackled here as checklists
• feat: Completed task
• chore: Incomplete task
  • test: Sub-task 1

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[github-actions]

Pull Request Test Coverage Report for Build 6543941698

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 5 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.05%) to 79.167%

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Files with Coverage Reduction	New Missed Lines	%
healthcrm.go	5	80.0%

Totals
Change from base Build 6493458703:	0.05%
Covered Lines:	152
Relevant Lines:	192

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💛 - Coveralls