Redmine

This patch is based on a branch from #43165, with minor modifications.

• Converting the entire library to ES modules eliminates the risk of variable name collisions.
• Refactored jstoolbar from the old prototype-based syntax to a more readable class syntax.
• Switched DOM element creation from JavaScript to ERB, which makes preparing and cloning DOM elements easier by using the <template> element.
• Moved all jstoolbar locales to config/locales to simplify i18n. * Added the missing tasklist locale for both ja and en.
• Integrated the list-autofill controller into jstoolbar as both controllers are used in the same places.

Applying this patch along with #42521 enables the implementation of #40310.

This patch can be applied to r24014