Build: Improve NPM publishing (#65171)

* chore(packages): remove redundant npm scripts for publishing packages

* feat(packages): rewrite npm publishing script to work for manual and ci publishes

* ci(drone): update release-canary-npm-packages step to use new script

* docs(packages): update manual release instructions

* wip(packages): attempt to validate packed npm package

* fix(packages): release-canary-npm-packages should provide canary dist-tag

* ci(packages): clean up npm package validation script

* chore(devenv): add verdaccio config to allow anon publishing for easier dev npm testing

* ci(packages): clean up publishing script

* ci(drone): during build-frontend-packages, pack and validate packed tarballs

* chore(codeowners): update for publish/validate npm packages scripts

* ci(packages): fix esm loop bug matching e2e package

* ci(npm-packages): fix failing regex

* style(lib.star): run make format-drone

* style(npm-packages): shellcheck fixes for validate-npm-packages script

* docs(packages): update readme instructions for publishing locally and manually

* refactor(npm-publish): use drone when to trigger canary releases

* chore(drone): remove redundant trigger_npm_publish var

* chore(npm-publish): remove redundant echo

.github/CODEOWNERS

@@ -455,6 +455,8 @@ lerna.json @grafana/frontend-ops
 /scripts/check-breaking-changes.sh @grafana/plugins-platform-frontend
 /scripts/ci-* @grafana/grafana-delivery
 /scripts/circle-* @grafana/grafana-delivery
+/scripts/publish-npm-packages.sh @grafana/grafana-delivery @grafana/plugins-platform-frontend
+/scripts/validate-npm-packages.sh @grafana/grafana-delivery @grafana/plugins-platform-frontend
 /scripts/ci-frontend-metrics.sh @grafana/grafana-frontend-platform @grafana/plugins-platform-frontend @grafana/grafana-bi-squad
 /scripts/cli/ @grafana/grafana-frontend-platform
 /scripts/clean-git-or-error.sh @grafana/grafana-as-code