adding services to IMPLEMENTED_ENDPOINT_SERVICES, to be returned by describe_vpc_endpoint_services calls

[jamesnixon-aws]

Addresses: #7469

Services retrieved via a real call to describe-vpc-endpoint-services.

[jamesnixon-aws]

Not sure what the test failures are caused by, but they seem unrelated to the changes. There are nested import errors for moto.accessanalyzer. Any ideas on the cause are welcome.

[bblommers]

Hi @jamesnixon-aws! The logic behind the implementation is basically:

for every_service in IMPLEMENTED_SERVICES:
    lazyload the service module (implementation for that service)
    request the vpc_endpoint details from that module

The errors for moto.accessanalyzer appear because Moto doesn't have a service module for most items from the list - so the call to importlib.import_module('moto.accessanalyzer') is bound to fail.

I've raised a different PR with a fix: #7509.
That implementation returns a sensible default config for services that Moto doesn't know about, and also fixes a bug where Moto would only cache service configs for a single region.

Thank you for getting started with this, and for providing the list of supported services!