RHCLOUD-24456: Add base URL to plugin manifest

[vojtechszocs]

• add new mandatory field baseURL to plugin manifest, computed from webpack output.publicPath option
• baseURL should have a trailing slash as per common webpack recommendation (if not, emit a build warning)
• expose processed manifest object to consumers at runtime via LoadedPluginInfoEntry type - contains everything from raw manifest, minus extensions, plus fallbacks for optional properties missing in raw manifest
• sample-plugin/plugin-metadata.json ➡️ sample-plugin/plugin-metadata.ts for better type checking

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: vojtechszocs

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[vojtechszocs]

make semver related imports more specific for better module tree shaking

Using webpack-bundle-analyzer shows that

import { valid as semverValid, satisfies as semverSatisfies } from 'semver';
import type { RangeOptions as SemverRangeOptions } from 'semver';

vs.

import * as semver from 'semver';

has no impact on which semver code gets pulled into the webpack compilation of the sample application.

[openshift-ci]

@vojtechszocs: all tests passed!

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[vojtechszocs]

/hold

Some small improvements incoming.

[vojtechszocs]

/hold cancel

I'll post these improvements in a follow-up PR.

[openshift-ci-robot]

@vojtechszocs: This pull request references RHCLOUD-24456 which is a valid jira issue.

In response to this:

• add new mandatory field baseURL to plugin manifest, computed from webpack output.publicPath option
• baseURL should have a trailing slash as per common webpack recommendation (if not, emit a build warning)
• expose processed manifest object to consumers at runtime via LoadedPluginInfoEntry type - contains everything from raw manifest, minus extensions, plus fallbacks for optional properties missing in raw manifest
• sample-plugin/plugin-metadata.json ➡️ sample-plugin/plugin-metadata.ts for better type checking

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/test-infra repository.

[florkbr]

/lgtm