New registry viewer build process

[michael-valdron]

What does this PR do / why we need it:

Provides the following changes:

• Additional environment variables and build arguments to image build Dockerfile
• Adds additional shell scripts for building and publishing the registry viewer
• Add a push image workflow for building the registry viewer image, publishing the registry viewer image, and sending a dispatch to devfile/registry to trigger staging deployment workflows

Which issue(s) this PR fixes:

Fixes #?

part of devfile/api#747

PR acceptance criteria:

• Unit Tests
• E2E Tests
• Documentation

How to test changes / Special notes to the reviewer:

[nx-cloud]

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✅ Successfully ran 5 targets

• nx affected --target=e2e --configuration=production --parallel=1
• nx affected --target=docker-build --parallel=3
• nx affected --target=build --parallel=3
• nx affected --target=test --parallel=3 --ci --code-coverage
• nx affected --target=lint --parallel=3

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Sent with 💌 from NxCloud.

[michael-valdron]

This PR is Blocked, the following repository secrets needs adding:

• NEXT_PUBLIC_ANALYTICS_WRITE_KEY: Analytics key for the registry viewer No longer needed
• QUAY_USERNAME: For logging into the account for publishing to quay.io/devfile
• QUAY_PASSWORD: For logging into the account for publishing to quay.io/devfile
• REPO_ACCESS_TOKEN: For dispatching to devfile/registry

cc: @johnmcollier @schultzp2020

[michael-valdron]

PR unblocked.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: michael-valdron, schultzp2020

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