Bitwise expression functions

Function	Support	Notes
`BITNOT`	Supported
`BITSHIFTLEFT`	Supported
`BITSHIFTRIGHT`	Supported
`BIT_NOT`	Supported
`GETBIT`	Supported
`BIT_AND`, `BIT_OR`, `BIT_XOR`	With limitations	Available for some argument types only.
`BITAND`, `BITANDAGG`, `BITCOUNT`, `BITOR`, `BITORAGG`, `BITXOR`, `BITXORAGG`, `BIT_ANDAGG`, `BIT_AND_AGG`, `BIT_ORAGG`, `BIT_OR_AGG`, `BIT_SHIFTLEFT`, `BIT_SHIFTRIGHT`, `BIT_XORAGG`, `BIT_XOR_AGG`	Not supported