Users index: Search users - add form only

[MarchandMD]

Description

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Need a way to search users

User Story

As a user
I want to type part of a users name into a search field
So that I can see filtered results to show that user, to facilitate the discovery of specific persons

Engineering Checklist

• Add a search field
• Add a submit button (not active)

Acceptance Criteria

• Add a search field
• Add a submit button (not active)

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Additional Context

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