WIP: Integration sink and source: all together

[matzew]

In progress (contains bits from closed #8239 ) and is layered on-top of #8238

/hold

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: matzew

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[codecov]

Codecov Report

Attention: Patch coverage is 16.01942% with 519 lines in your changes missing coverage. Please review.

Project coverage is 64.92%. Comparing base (aa6f73b) to head (4f516d8).

Files with missing lines	Patch %	Lines
...iler/integration/sink/resources/container_image.go	0.00%	101 Missing ⚠️
pkg/reconciler/integration/sink/integrationsink.go	0.00%	98 Missing ⚠️
...er/integration/source/resources/containersource.go	0.00%	69 Missing ⚠️
pkg/reconciler/integration/helper.go	0.00%	59 Missing ⚠️
pkg/reconciler/integration/source/controller.go	0.00%	43 Missing ⚠️
pkg/reconciler/integration/sink/controller.go	0.00%	36 Missing ⚠️
...reconciler/integration/source/integrationsource.go	0.00%	30 Missing ⚠️
.../apis/sinks/v1alpha1/integration_sink_lifecycle.go	15.38%	22 Missing ⚠️
pkg/apis/sources/v1alpha1/integration_lifecycle.go	57.57%	14 Missing ⚠️
pkg/apis/sources/v1alpha1/register.go	0.00%	11 Missing ⚠️
... and 9 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8254      +/-   ##
==========================================
- Coverage   66.57%   64.92%   -1.66%     
==========================================
  Files         371      392      +21     
  Lines       18282    18900     +618     
==========================================
+ Hits        12172    12271      +99     
- Misses       5321     5835     +514     
- Partials      789      794       +5     

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[knative-prow]

@matzew: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
reconciler-tests_eventing_main	4f516d8	link	true	/test reconciler-tests

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