chore: Deprecate size limits in the KafkaRequest schema

[JasonPowr]

Description

The KafkaRequest schema contains the following fields providing information on the instance size limits:
- egress_throughput_per_sec
- ingress_throughput_per_sec
- instance_type_name
- max_connection_attempts_per_sec
- max_data_retention_period
- max_partitions
- total_max_connections

In this PR these fields have been marked for deprecation
Jira: https://issues.redhat.com/browse/MGDSTRM-8967

Checklist (Definition of Done)

• All acceptance criteria specified in JIRA have been completed
• Unit and integration tests added that prove the fix is effective or the feature works (tested against emulated and non-emulated OCM environment)
• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer
• All PR comments are resolved either by addressing them or creating follow up tasks
• Required metrics/dashboards/alerts have been added (or PR created).
• Required Standard Operating Procedure (SOP) is added.
• JIRA has been created for changes required on the client side

[codecov]

Codecov Report

Merging #1183 (f66299f) into main (8791d0b) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1183   +/-   ##
=======================================
  Coverage   82.51%   82.51%           
=======================================
  Files         131      131           
  Lines       11396    11396           
=======================================
  Hits         9403     9403           
  Misses       1638     1638           
  Partials      355      355           

Flag	Coverage Δ
unittests	82.51% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
internal/kafka/internal/presenters/kafka.go	98.98% <100.00%> (ø)

[JameelB]

Thanks for this @JasonPowr, lgtm!