FHIR-Eswatini docs

[josephjclark]

First swing at an overview docs page for fhir-eswatini

AI Usage

Please disclose how you've used AI in this work (it's cool, we just want to
know!):

• Code generation (copilot but not intellisense)
• Learning or fact checking
• Strategy / design
• Optimisation / refactoring
• Translation / spellchecking / doc gen
• Other
• I have not used AI

You can read more details in our
Responsible AI Policy

[josephjclark]

Hi @hunterachieng @JustineStewart @aleksa-krolls can someone drop an approve on these docs for fhir? Just a first pass, I'm sure weell come back to it