Function startsWithUppercase

startsWithUppercase(value: string): boolean
Checks if a string starts with an uppercase letter.
Parameters
- value: string
  The input string to check.
Returns boolean
True if the first character is uppercase, false otherwise.
Example
```
startsWithUppercase('Hello') // true
startsWithUppercase('world') // false
```
- Defined in src/string/validate.ts:174