[WIP] Upgrade plugin for OpenShift 4.19+ compatibility

[empovit]

• Update OpenShift Console SDK from 0.0.11 to 1.4.0
• Upgrade PatternFly components from v4 to v6
• Align with OpenShift 4.20 console plugin template
• Update Node.js base image from 16 to 20
• Modernize webpack and TypeScript configuration
• Add code quality tools (prettier, stylelint)
• Enhance i18n support with custom lexers
• Improve deployment security contexts and resource defaults
• Move nginx config to Helm configmap template
• Clean up obsolete files (default.conf, duplicate configs)
• Update compatibility table
• Complete PatternFly v6 code migration
• Add SCSS support for PatternFly v6 styles
• Add all DCGM metrics provided by default

[openshift-ci]

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[empovit]

/hold

[yakovbeder]

Request changes:

• i18n-scripts/lexers.js: remove stray debug console.log(1) from CustomJSONLexer.
• i18n-scripts/build-i18n.sh: CLI invocation includes [-oc] (looks like usage-doc syntax); fix to valid i18next-parser args so yarn i18n works and scripts/test-i18n.sh leaves locales/ clean.
• src/components/PodStatus/PodStatus.tsx: links use pod.metadata.nam (typo); should be pod.metadata.name (otherwise generated URLs are broken).
• src/components/PodStatus/PodStatus.tsx: Unschedulable check uses condition.status === 'False'; should be True (or remove the status check and key off reason/message).
• tsconfig.json: strict changed to false; if temporary for migration, please add follow-up to re-enable strictness (or keep strictNullChecks enabled).

Verification needed:

• Dockerfile/nginx changes: entrypoint + nginx.conf moved to Helm ConfigMap; please confirm container starts on OCP 4.19+ as non-root and TLS cert mount path matches nginx.conf (/var/cert/tls.{crt,key}).