Support GitHub repository devfile url

[vinokurig]

What does this PR do?

Add an ability to start a workspace from the repository url of a devfile e.g. https://github.com/vinokurig/test/blob/master/devfile.yaml This will be an experimental feature and will be applied only for GitHub.

Since GitHub url defines branch as a segment of the file path e.g. https://github.com/user/repository/blob/branch/file, we can not distinguish a branch with / from the path. For instance we can have such path: /branch/with/slash/file in the url, so we can not parse it as <branch>/<path to file> as both branch and path may contain /, see.

In this implementation when parsing a file path from a url, we give the priority to the file path, so when parsing /branch/with/slash/file, we assume that branch => branch/with/slash and file path => file

With this solution we can generate RAW devfile url from a repository url like: https://github.com/user/repository/blob/branch/path/to/devfile.yaml, but we pass branch/path/to to the factory parameters, and as a result the project clone will fail and the default branch will be used. However, we do not break the existing functionality that allows to start a workspace with branch that has / in its name.

Screenshot/screencast of this PR

What issues does this PR fix or reference?

fixes eclipse-che/che#23390

How to test this PR?

1. Deploy che with the pull request image: quay.io/eclipse/che-server:pr-793
2. Start a workspace from a repository devfile url, e.g. https://github.com/vinokurig/test/blob/master/path/devfile.yaml

See: devfile from the directory path is resolved.

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Release Notes

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[ibuziuk]

@vinokurig hmm, why raw Devfile has the lowest priority now?

[vinokurig]

Because the repository devfile url may matc the RAW devfile url pattern, so we need to check the provider resolvers first.

[artaleks9]

/retest

[artaleks9]

Verified on Eclipse Che with quay.io/eclipse/che-server:pr-793 - the functionality works properly

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: artaleks9, ibuziuk, tolusha, vinokurig

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Build 3.21 :: server_3.x/400: Console, Changes, Git Data

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Build 3.21 :: get-sources-rhpkg-container-build_3.x/9280:

server : 3.x :: Build 67304025 : quay.io/devspaces/server-rhel9:3.21-6
SUCCESS; copied to quay; /DS_CI/push-latest-container-to-quay_3.x/5136 triggered

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Build 3.21 :: server_3.x/400:

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Build 3.21 :: operator-bundle_3.x/4753: Console, Changes, Git Data

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Build 3.21 :: get-sources-rhpkg-container-build_3.x/9281:

devspaces-operator-bundle : 3.x :: Failed in 67304261 : BREW:BUILD/STATUS:UNKNOWN
FAILURE:; copied to quay