Action menu: add appearance property

[driskull]

Check existing issues

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

Description

Action menu: add appearance property

Acceptance Criteria

Action menu: add appearance property

Relevant Info

No response

Which Component

action-menu

Example Use Case

<calcite-action-menu appearance="transparent">
      <calcite-action text="Plus" icon="plus" text-enabled></calcite-action>
      <calcite-action text="Minus" icon="minus" text-enabled></calcite-action>
      <calcite-action text="Table" icon="table" text-enabled></calcite-action>
    </calcite-action-menu>

Priority impact

p4 - not time sensitive

Calcite package

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

Esri team

N/A

[github-actions[bot]]

Installed and assigned for verification.

[geospatialem]

Verified with the action-menu where appearance is "transparent" and "solid".

cc @SkyeSeitz @ashetland @brittneytewks for Figma changes.