Added ~/ operator, most of uri getters, trim and String.fromCharCode to string, MapEntry wrapper and potential base64 wrapper

[Noobware1]

@ethanblake4 could you please see the implemention for the ~/ operator cause it could be wrong the test case works so i think it's correct.

also i was trying to add removeWhere method on List but i wouldn't work if i do it like this saying bool is not subtype of $Value in typecast or something

final list = [1,2,3,4,5];
list.removeWhere((e) => e == 5);

but it would work if i do it like this

final list = [1,2,3,4,5];
bool remove(int e) {
return e == 5;
}

list.removeWhere((e) {
return remove(e);
});

also thanks for the guidance :)

[Noobware1]

Sorry for the dumb error T-T

[ethanblake4]

Looks great, thanks! You should either uncomment or remove the Base64 stuff though depending on if it works.

[Noobware1]

removed the base64 since it doesn't seem to work neither encode nor decode