Function isExalted

isExalted(planet: Planet, sign: Sign): boolean
Check if a planet is exalted in a given sign
Parameters
- planet: Planet
  The planet
- sign: Sign
  The sign
Returns boolean
True if planet is exalted in the sign
Example
```
isExalted(Planet.Sun, Sign.Aries);       // true
isExalted(Planet.Mars, Sign.Capricorn);  // true
isExalted(Planet.Uranus, Sign.Scorpio);  // false (no exaltation)
```
- Defined in zodiac/dignities.ts:199