WIP: ODC-7664: Add subscribe form for Knative EventType

[vikram-raj]

Story: https://issues.redhat.com/browse/ODC-7664

Descriptions: This PR adds a subscribe form for Knative EventType.

Screenshots:

[openshift-ci-robot]

@vikram-raj: This pull request references ODC-7664 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.18.0" version, but no target version was set.

In response to this:

Story: https://issues.redhat.com/browse/ODC-7664

Descriptions: This PR adds a subscribe form for Knative EventType.

Screenshots:

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vikram-raj

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[openshift-ci]

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

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-gcp-console	f45702a	link	true	/test e2e-gcp-console
ci/prow/frontend	f45702a	link	true	/test frontend

Full PR test history. Your PR dashboard.

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