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Description

Doris have add a new datatype about binary,
And now need support some binary functions.
some function have implement for string type in Doris, so need explands it for varbinary type.
and those function could ref Velox or DuckDB.

if you wants implement one of function as below, you could comment and pick it like issue，
and when you implement the function, you maybe could refer this to know what you should do.

1. length(varbinary) -> int
2. md5(varbinary) -> string
3. sm3(varbinary) -> string
4. xxhash_32(varbinary) -> int
5. xxhash_64(varbinary) -> bigint
6. sha1(varbinary) -> string
7. sha2(varbinary, int) -> string
8. from_base64_binary(string) -> varbinary
9. to_base64_bianry(varbinary) -> string
10. sub_binary(varbinary, <pos> [, <len>]) ->varbinary