[Type][refactor] Use Tagged Pointer for bit-level pointers

[Hanke98]

Concisely describe the proposed feature
Related to pr #1948 and issue #1905 .
Since we implemented PointerType which could be used for pointing to a specific bit, we might need to use tagged pointer to describe the bit address. Then we can use the bit address to do some bit-level operations like setting some bits to zero or one.

Describe the solution you'd like (if any)
A possible way is using a derived class like TaggedPointerType which contains some additional information. We could use the additional information as the bit address in the byte.

Please help me to know if this is right. Thanks a lot!