1. Ease the elegant exiting procedure by providing a singleton access pattern. Now the exiting procedure can easily call the exit_non_block method to notify the executors to start exiting worker processes. If the worker processes not exit after a timeout, the mindinsight stop still can kill these processes.

2. Build a framework for managing computing resources used by different businesses. Different businesses can now call the get_executor() API to get their process pool to execute compute heavy tasks outside the mindinsight guinicorn worker process, which will make the restful api respond more quickly.

From: @jiang-shuqiang
Reviewed-by: 
Signed-off-by:

From: @liangyongxiong1024
Reviewed-by: @wenkai_dist,@lilongfei15
Signed-off-by: @lilongfei15

add DebuggerSetRecommendWatchpointsError when set recommend watchpoints more than one time
add DebuggerConditionUnavailableError when create watchpoint with unavailable condition

When CRC error occurs, it is generally caused by incomplete data in the file, so error information should be given to prompt the user.

add info when crc check failed.

Fix when the message is :current process ...100%,convert not finished

Fix When special characters in the tag, the output image file is incomplete

we can use the function to transfer summary file to csv file and image so that it is easy to read and process

Add debugger_port check function and move debugger start parameters to hook

1. To accelerate summary file parsing, multiple processes are used. As the first step to mindinsight parsing performance optimization, we only made changes to _load_single_file function.

2. This PR will imporve summary parsing throughput dramatically (about cpu_count times)

3. Changes are mainly about _load_single_file function

In the future, a more global concurrent computing framework is needed for mindinsight. See the gitee wiki doc for details.