Configurable rate limit on requests to Zitadel

[emgrav]

Description

To reduce load for large deployments with many users, we want to implement a configurable rate limit for the sync. This should take the form of "wait X amount of time between each Zitadel operation". This is to prevent too big of a load on the WF* during user creation.

User story

As a Famedly employee, I want the migration of users to the new stack to be smooth so we can provide good service to our customers.

Steps to implement

• Add a configurable wait period between outgoing requests to Zitadel

[jannden]

Based on a team discussion, we will postpone this till we have zitadel-rust-client in V2 and try to implement rate limiting on network calls.

For reference:

There's a feature request upstream: seanmonstar/reqwest#491
With some suggestions on how to do it.