[Block] Provide consistent use of sorting similar to `list`

[geospatialem]

Check existing issues

• [X] I have checked for existing issues to avoid duplicates

Description

block currently offers a handle attribute, but the sorting functionality is handled via a parent internal unsupported and undocumented component. Instead we should offer support to a set of grouped blocks in alignment with list and list-item.

Acceptance Criteria

• [ ] Provide a new prop (dragEnabled?) that allows specified block's to be movable
• [ ] Deprecate the handle property (to be removed in 4.0)
• [ ] Deprecates the internal sortable-list (to be removed in 4.0)

Relevant Info

• Consistency across the design system
• Removal of internal and undocumented components
• Use case of Esri teams seeking to provide sorting on block components

Which Component

block

Example Use Case

https://codepen.io/geospatialem/pen/XWvJbEm

Priority impact

impact - p2 - want for an upcoming milestone

Calcite package

• [X] @esri/calcite-components
• [ ] @esri/calcite-components-angular
• [ ] @esri/calcite-components-react
• [ ] @esri/calcite-design-tokens
• [ ] @esri/eslint-plugin-calcite-components

Esri team

Calcite (dev)

[geospatialem]

Spike needed to determine the structure of the component needed to provide sorting on specified blocks.