JENKINS-69301 Update handlebars and replace js-libs with parcel

[jgreffe]

https://issues.jenkins.io/browse/JENKINS-69301
Upgrade handlebars to 4.7.7 as a self-contained JS
Remove jenkins-js-libs and jenkins-js-builder dependencies
Move from jenkins-js-modules to @jenkins-cd/js-modules
Use parcel 2 as packager instead of gulp
Still use adjunct and js-modules for JS extension points

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[jgreffe]

Not sure why there's this error during build:

[2022-08-19T13:53:12.412Z] [INFO] > parcel build --public-url ./ ./src/main/js/stageview.js --dist-dir ./src/main/webapp/jsmodules && parcel build --public-url ./ ./src/main/js/stageview_adjunct.js --dist-dir ./target/generated-adjuncts/org/jenkinsci/pipeline
[2022-08-19T13:53:12.412Z] [INFO] 
[2022-08-19T13:53:12.412Z] [INFO] Error: The specified module could not be found.
[2022-08-19T13:53:12.412Z] [INFO] \\?\C:\Jenkins\workspace\ipeline-stage-view-plugin_PR-240\ui\node_modules\@parcel\source-map\parcel_sourcemap_node\artifacts\index.win32-x64-msvc.node

Edit: fixed by using buildPlugin(useContainerAgent: false, configurations: [.

[jgreffe]

Temporary configuration in respect to jenkins-infra/helpdesk#3105

[jgreffe]

Upgrade in order to make it pass with Mac M1 chips: eirslett/frontend-maven-plugin#952

[basil]

Does this still need to be released?