Issue Number: close#9403
set below rules' severity to error and format code according check info.
a. Merge conflicts unresolved
b. Avoid using corresponding octal or Unicode escape
c. Avoid Escaped Unicode Characters
d. No Line Wrap
e. Package Name
f. Type Name
g. Annotation Location
h. Interface Type Parameter
i. CatchParameterName
j. Pattern Variable Name
k. Record Component Name
l. Record Type Parameter Name
m. Method Type Parameter Name
n. Redundant Import
o. Custom Import Order
p. Unused Imports
q. Avoid Star Import
r. tab character in file
s. Newline At End Of File
t. Trailing whitespace found
This feature is propsoed in [DSIP-1](https://cwiki.apache.org/confluence/display/DORIS/DSIP-001%3A+Java+UDF).
This PR support fixed-length input and output Java UDF. Phase I in DIP-1 is done after this PR.
To support Java UDF effeciently, I use no data copy in JNI call and all compute operations are off-heap in Java.
To achieve that, I use a UdfExecutor instead.
For users, a UDF class must have a public evaluate method.
