Toolkit: Fix script failures due to missing import paths (#55857)

* fix(toolkit): package without dist folder so config file paths are correct

* chore(packages): make sure to bundle readme, changelog and apache2 license

* refactor(packages): recursively copy src when prepacking toolkit

* chore(toolkit): lock down babel dependencies. use grafana-eslint-config@5 for TS4.8 support

.gitignore

@@ -130,6 +130,7 @@ pkg/cmd/grafana-server/__debug_bin
 /packages/**/.rpt2_cache
 /packages/**/tsdoc-metadata.json
 /packages/**/package.tgz
+/packages/grafana-toolkit/sass
 ## CI places the packages in a different location
 /npm-artifacts/*.tgz