[feature] KEP-11385: Implement UI drop-down menu for Literal input parameters

[mprahl]

Feature Area

/area frontend

Part of KEP-11385.

Acceptance Criteria

The UI should display a drop-down menu for Literal input parameters to indicate to a user that the input is limited to the specific set of values.

• UI displays drop-down menu containing parameter value options for Literal runtime parameters. The user cannot type a custom input into the box - options are selection-only.
• A value must be selected from the drop-down menu before the user can initiate a pipeline run.

[khushiiagrawal]

hii @mprahl , I would like to work on this issue.

[khushiiagrawal]

/assign

[mprahl]

@khushiiagrawal thanks for volunteering! I'd suggest implementing the SDK portion first.

[khushiiagrawal]

@mprahl sure, i have mentioned that in the /sdk issue.
thanks!