Implement i128/u128 to JsBigInt conversions (#3129)

* Implement i128/u128 to JsValue Conversions
This commit implements trait conversions to JsValue for i128/u128.
This addresses #1970

* Remove Numeric trait impl for u/i128

* Re-add JsBigInt conversion for u/i128

* Update boa_engine/src/bigint.rs

Co-authored-by: Haled Odat <8566042+HalidOdat@users.noreply.github.com>

* Add missing newlines

---------

Co-authored-by: Iban Eguia Moraza <razican@protonmail.ch>
Co-authored-by: Haled Odat <8566042+HalidOdat@users.noreply.github.com>
Co-authored-by: José Julián Espina <jedel0124@gmail.com>

boa_engine/src/bigint.rs

@@ -390,6 +390,24 @@ impl From<u64> for JsBigInt {
     }
 }
 
+impl From<i128> for JsBigInt {
+    #[inline]
+    fn from(value: i128) -> Self {
+        Self {
+            inner: Rc::new(RawBigInt::from(value)),
+        }
+    }
+}
+
+impl From<u128> for JsBigInt {
+    #[inline]
+    fn from(value: u128) -> Self {
+        Self {
+            inner: Rc::new(RawBigInt::from(value)),
+        }
+    }
+}
+
 impl From<isize> for JsBigInt {
     #[inline]
     fn from(value: isize) -> Self {