[SPARK-33245][SQL] Add built-in UDF - GETBIT
### What changes were proposed in this pull request?
`GETBIT` is a bitwise expression function given an INTEGER value, returns the value of a bit at a specified position.
`GETBIT( <integer_expr>, <bit_position> )`
Examples
select getbit(11, 100), getbit(11, 3), getbit(11, 2), getbit(11, 1), getbit(11, 0);
GETBIT(11, 3) | GETBIT(11, 2) | GETBIT(11, 1) | GETBIT(11, 0)
-- | -- | -- | --
1 | 0 | 1 | 1
The mainstream database support this feature show below:
**Teradata**
https://docs.teradata.com/reader/kmuOwjp1zEYg98JsB8fu_A/PK1oV1b2jqvG~ohRnOro9w
**Impala**
https://docs.cloudera.com/runtime/7.2.0/impala-sql-reference/topics/impala-bit-functions.html#bit_functions__getbit
**Snowflake**
https://docs.snowflake.com/en/sql-reference/functions/getbit.html
**Yellowbrick**
https://www.yellowbrick.com/docs/2.2/ybd_sqlref/getbit.html
### Why are the changes needed?
GETBIT is very useful.
### Does this PR introduce _any_ user-facing change?
Yes. GETBIT is a new bitwise function.
### How was this patch tested?
Jenkins test
Closes #31198 from beliefer/SPARK-33245.
Authored-by: beliefer <beliefer@163.com>
Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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