Add operator install script

[SimonBaeumer]

Description

Add operator install script to install and upgrade the operator independently of the setup scripts.

Checklist (Definition of Done)

• Unit and integration tests added
• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.

Test manual

• run scripts

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[kovayur]

Pls call using the full path, it will not work when I call the bootstrap script from the root folder for example (or using make)

[SimonBaeumer]

The other scripts are called locally too and it works. Removed the ./ though and call it like apply.

[kovayur]

LGTM!

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kovayur, SimonBaeumer, vladbologa

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