Remove deprecated Bootstrap classes -- or even outdated classes!

[VividLemon]

There are instances of using Bootstrap classes that are either deprecated or much worse, removed.

One instance of this is/was btn-block

[VividLemon]

These items need to be removed and updated to reflect their bootstrap 5 capabilities.

[sceee]

I've worked through https://getbootstrap.com/docs/5.3/migration/#v500 , I found references to the following breaking changes from bootstrap 5 in bootstrap-vue-next and think these need to be adressed:

SASS:

• Previously deprecated hover-focus-active() mixin was removed (https://getbootstrap.com/docs/5.3/migration/#sass)

Grid:

• There is now only .order-1 to .order-5 out of the box ( https://getbootstrap.com/docs/5.3/migration/#grid-updates ). .order-6 is used at least in a BCol test

Forms:

• .custom-range (used in the docs) was renamed to .form-range (https://getbootstrap.com/docs/5.3/migration/#forms-1)
• .input-group-append and .input-group-prepend have been dropped (used in scss) (https://getbootstrap.com/docs/5.3/migration/#forms-1)

Components:

• .badge-* color classes have been dropped (used in the docs) (https://getbootstrap.com/docs/5.3/migration/#badges)
• .card-deck was dropped (used in scss and BCardGroup) (https://getbootstrap.com/docs/5.3/migration/#card)
• .card-columns was dropped (used in scss and BCardGroup) (https://getbootstrap.com/docs/5.3/migration/#card)
• flip option for Dropdown plugin was dropped in favor of native Popper configuration (used in BDropdown) (https://getbootstrap.com/docs/5.3/migration/#dropdowns-1)

Utilities:

• Renamed .ml-* and .mr-* to .ms-* and .me-* (used in the docs and playground) (https://getbootstrap.com/docs/5.3/migration/#utilities-3)
• Renamed .sr-only to .visually-hidden (used in docs and playground) (https://getbootstrap.com/docs/5.3/migration/#utilities-3)

I hope I detected most. It's sometimes pretty hard to detect these as you cannot simply search for the deprecated/removed classes as they are sometimes joined together from different strings/props.

[VividLemon]

Tyvm

[github-actions]

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