Add phpdoc annotations 📚

Author: michael-rubel

src/Collection/Primitive/Number.php

@@ -29,6 +29,17 @@
  * @method static static from(int|string $number, int $scale = 2)
  * @method static static makeOrNull(int|string|null $number, int $scale = 2)
  *
+ * @method string abs()
+ * @method string add(float|int|string $value)
+ * @method string divide(float|int|string $value)
+ * @method string multiply(float|int|string $value)
+ * @method string mod(float|int|string $value)
+ * @method string pow(int|string $value)
+ * @method string sqrt()
+ * @method string subtract(float|int|string $value)
+ *
+ * @see \PHP\Math\BigNumber\BigNumber
+ *
  * @extends ValueObject<TKey, TValue>
  */
 class Number extends ValueObject