[Feature] add log for sharding logic SQL and real SQL.

[dongzl]

What would you like to be added:

Why is this needed:

For sharding table, the logic sql will be convert to real sql to execute, so we need to print all the sql for debug.

Logic SQL: SELECT * FROM student where uid = 1;
Physical SQL: node2 : SELECT * FROM student_2 where uid = 1;

and add config for open or close it.

[dongzl]

• trace_id sql-param(json)、success or fail、cost time、affect、tx log

[jjeffcaii]

There are many loggers includes:

• Main logger: record all logs of core component
• Logical SQL logger: record all logical SQL, for example, select * from student where uid in (1,2,3).
• Physical SQL logger: record all physical SQL, for example, select * from student_0001 where uid in (1,2,3)...
• TX logger: record each TX behavior

Should add configuration in bootstrap.yaml, includes:

• Global log level
• Is logger enabled? I think the SQL loggers should be disabled by default, except when the global log level is DEBUG, or enabled manually.
• Is output into console?
• Log path?

[jjeffcaii]

Read the environment: ARANA_LOG_PATH=/var/log/arana

Logger	Default Path	Default Level	Console Output
Main	$ARANA_LOG_PATH/arana.log	INFO	✅
Logical SQL	$ARANA_LOG_PATH/sql.log	DEBUG	🚫
Physical SQL	$ARANA_LOG_PATH/physql.log	DEBUG	🚫
TX	$ARANA_LOG_PATH/tx.log	INFO	✅

the SQL/TX logger should print the namespace, for example:
[namespace] $trace_id ...

[maronghe]

明天提交 MR；