[Revised] New Component: NumberInput #30

[JKong05]

Following up with some changes to NumberInput component.

• Removed handleBlur() and base()
• Preserved val as a number and removed extra string state
• Directly calls setVal() inside increment and decrement handlers
• Removed unneeded input keydown controls (Up, Down, Escape) inside handleKeyDown()
• Only using === now
• Sets max, min, and step locally now
• Using Google Icons now in button styling
• In handleChange(), invalid numeric inputs are now handled

[kohrachel]

Looks good! Thanks for coding this up :)

I just realized that the Figma uses Material Symbols Rounded instead of Outlined so I changed that for standardization. Great work 💪🏻💪🏻💪🏻