implement changes for normalizing item names

[eva-lng]

Description

Created a NormalizeItemName function to capitalize the first letter of an item and convert the rest to lowercase

Related Issue

closes #37

Acceptance Criteria

• Create a NormalizeItemName function in the ManageList component
• Use this function in the ManageList component and convert the user's input upon entry before adding the item to the list using the addItem function.

Type of Changes

enhancement

Updates

Before

After

Testing Steps / QA Criteria

• Do npm start in the branch
• Navigate to the ManageList page
• Add a new list item with random naming standards
• Check the name in the list view. It should be normalized

[github-actions]

Visit the preview URL for this PR (updated for commit acb7feb):

https://tcl-78-smart-shopping-list--pr40-tc-el-normalize-item-haykx7h5.web.app

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