Final Steps To Archive Repository

[Jdubrick]

This PR performs the following steps in preparation for archiving this repository:

• Add warning to main readme outlining the deprecation.
• Remove contributing instructions and issue opening instructions.

resolves devfile/api#1682

[michael-valdron]

@Jdubrick Should remove all references to weekly schedule on Wednesdays as well.

[michael-valdron]

@Jdubrick These lines should also be revised to remove the Wednesday schedule from them.

Nit suggestion: I notice the .ci/build.sh fails when I run it, though it is not required I feel it would be great to pin the registry-support reference, such as devfile/registry-support@4bc237b, so if it does work on a previous state someone can still build the image. I would say only do this if its an easy change otherwise I won't block this PR due to this.

[Jdubrick]

@Jdubrick These lines should also be revised to remove the Wednesday schedule from them.

Nit suggestion: I notice the .ci/build.sh fails when I run it, though it is not required I feel it would be great to pin the registry-support reference, such as devfile/registry-support@4bc237b, so if it does work on a previous state someone can still build the image. I would say only do this if its an easy change otherwise I won't block this PR due to this.

I updated the readme and pinned the commit, I had to force the checkout but the collisions were in vendor file readme files so I think it's alright. If we don't want to do that I can revert it, fyi @michael-valdron

[michael-valdron]

Build seems to work now 😄

Just the one comment I have left and should be good to merge.

[michael-valdron]

/lgtm