Add createQueryAtom

[Olian04]

const A = createQueryAtom({
   key: 'a',
   default: 0,
});

A.get() // 0

A.set(v => v + 1) // Will update query parameter "a" to be 1

// Page reload...

location.search // "?a=1"
A.get() // 1

A.set(2);

// Page reload...

location.search // "?a=2"
A.get() // 2

A.set(0);

// Page reload...

location.search // ""
A.get() // 0
// "a" is removed from query since its equal to its default value


// For creating links that update the page state
A.urlWhenSet(4); // www.domain.com?a=4