Give consumers the ability to apply a custom retry strategy for HTTP calls

[mikejancar]

🚀 Feature request

Please describe what is needed

The retry strategy for failed HTTP calls in the HttpApiService is currently hardcoded to:

• a maximum of 3 attempts
• a retry wait period of 1000 ms
• ignore HTTP status codes of 0

We should give our consumers the ability to provide a custom strategy.

Describe the solution you'd like

The simplest way to achieve this would be to allow a custom configuration via the AppConfiguration object.

Describe alternatives you've considered

N/A

Additional context

https://github.com/Progressive/oculr-ngx/blob/a6a98dc8f52c1430f9294e554d990e62231aae84/projects/oculr-ngx/src/lib/destinations/http-api/http-api.service.ts#L71