Add option to set max length of a breadcrumb item

[elizavetaRa]

Description

Adds config option breadcrumbItemMaxLength for max length of a breadcrumb item (desktop version)

• With the option set to > 0 the item text gets cut to max length + "..."
• Shorten items get a tooltip with the full item text

Related Issue

#6731

Motivation and Context

UI improvement

Screenshots (if appropriate):

Long items without pr

Long items with pr

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

Open tasks:

• Should the last item always be fully visible?
• Should max length be also used for mobile version (drop)? But it doesn't have the same problem as a multiline list
• Now added only to breadcrumb in AppBar.vue . Where else it makes sense to add?

[update-docs]

Thanks for opening this pull request! The maintainers of this repository would appreciate it if you would create a changelog item based on your changes.

[elizavetaRa]

@tbsbdr Could you give your opinion on the following:

• Should the last item always be fully visible? Currently, it can also be shorten with this option.
• Should max length also be used for mobile version (drop)? But it doesn't have the same problem as a multiline list, so, currently, not.
• Now added only to the web-app-files breadcrumb in AppBar.vue. Where else it makes sense to add?

[tbsbdr]

• Should the last item always be fully visible? Currently, it can also be shorten with this option.

I'd say: last item is always not truncated (but tbh I have no super strong opinion about it)

• Should max length also be used for mobile version (drop)? But it doesn't have the same problem as a multiline list, so, currently, not.

jep👍 I think the same

• Now added only to the web-app-files breadcrumb in AppBar.vue. Where else it makes sense to add?

Administration Settings: I think its not necessary to truncate all breadcrumbs in Administration settings, having the truncation in the files app is only is perfectly sufficient

[kulmann]

Superseded by #8984