Create new Tenant and Admin user

[fox1t]

🚀 Feature Proposal

Add API to create new tenant and user.

Motivation

When a user starts HospitalRun (auto-hosted instance) or goes to app.hospitalrun.io for the first time, it will be presented with a "create new user form". The route receives user base info and tenant info

Upon request, this route:

• adds user to CouchDB;
• creates a new database on CouchDB for the tenant, using tenant.name and adding unique code;
• adds base entities to the db, such as ICD10;
• sets permissions to the newly database for the user.

Example

{
  "user": "cuzzo",
  "password": "something_strong",
  "tenant": {
     "name": "",
     "address": <standardAddressObject>,
     
   },
   ...
}