Enhancement: Add "hint-text" to calcite-label

[bstifle]

Description

Add hint-text property to calcite-label

Acceptance Criteria

need text separate from calcite-message and calcite label to solve for static support text

Relevant Info

Could be neat to use for character count requirements

Which Component

calcite-label

Example Use Case

[driskull]

This might be better as a slot than a property I think.

[julio8a]

This still needs more design for different layouts on input, i.e. inline.

[geospatialem]

Adding the slot will require a major refactor, and will be prioritized after next month's release. cc: @ashetland, @Elijbet

Once prioritized the effort should be coupled with #4155 and #5079.

[geospatialem]

Follow-up includes:

• Gathering use case feedback from teams, and
• Determine requirements of Create generic item layout component #6743 for inclusion/next steps on the above.

[ashetland]

Closing in favor of #5079 for inline slot.