main: add ostree integration (HMS-5302)

[mvo5]

This commit adds integration for the ostree options. It is modelled loosely after weldr-client/composer-cli and the

start-ostree --{ref,parent,url}

and uses

--ostree-{ref,parent,url}

This now has a smoke test based on fedora-iot, ideas for improvements here are welcome!

/jira-epic COMPOSER-2418

JIRA: HMS-5302

[ondrejbudai]

How does this behave if --ostree* is given to a non-ostree image type? We should probably return an error. Same for the opposite case - no ostree options for an ostree-enabled image type.

[mvo5]

How does this behave if --ostree* is given to a non-ostree image type? We should probably return an error. Same for the opposite case - no ostree options for an ostree-enabled image type.

Thanks for the review! I added two tests that ensure the cases are handled correctly.

[supakeen]

Seems like there are some actual test case failures while building the RPMs:

--- FAIL: TestManifestIntegrationOstreeSmokeErrors (0.06s)
    main_test.go:299: 
        	Error Trace:	/builddir/build/BUILD/image-builder-cli-4/_build/src/github.com/osbuild/image-builder-cli/cmd/image-builder/main_test.go:299
        	Error:      	Error message not equal:
        	            	expected: "iot-raw-image: ostree commit URL required"
        	            	actual  : "cannot find image for: distro:\"fedora-40\" type:\"iot-raw-image\" arch:\"s390x\""
        	Test:       	TestManifestIntegrationOstreeSmokeErrors