Add specific DecodeURL function in decoder package

[dmvolod]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #474

Special notes for your reviewer:

Does this PR introduce a user-facing change?

"NONE"

Additional documentation e.g., Usage docs, etc.:

DecodeURL is a stream of documents from the URL of any Kind using either the innate typing of the scheme.
Falls back to the unstructured.Unstructured type if a matching type cannot be found for the Kind.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: dmvolod
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[k8s-ci-robot]

Hi @dmvolod. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[dmvolod]

/kind feature

[harshanarayana]

/ok-to-test

[k8s-ci-robot]

@dmvolod: 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
pull-e2e-framework-test	1647777	link	true	/test pull-e2e-framework-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository. I understand the commands that are listed here.