optimize srv broker and executor logic (#630)

### What problem does this PR solve?

Optimize task broker and executor for reduce memory usage and deployment
complexity.

### Type of change
- [x] Performance Improvement
- [x] Refactoring

### Change Log
- Enhance redis utils for message queue(use stream)
- Modify task broker logic via message queue (1.get parse event from
message queue 2.use ThreadPoolExecutor async executor )
- Modify the table column name of document and task (process_duation ->
process_duration maybe just a spelling mistake)
- Reformat some code style(just what i see)
- Add requirement_dev.txt for developer
- Add redis container on docker compose

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

docker/entrypoint.sh

@@ -12,29 +12,14 @@ function task_exe(){
     done
 }
 
-function watch_broker(){
-  while [ 1 -eq 1 ];do
-    C=`ps aux|grep "task_broker.py"|grep -v grep|wc -l`;
-    if [ $C -lt 1 ];then
-       $PY rag/svr/task_broker.py &
-    fi
-    sleep 5;
-  done
-}
-
-function task_bro(){
-    watch_broker;
-}
-
-task_bro &
-
 WS=1
 for ((i=0;i<WS;i++))
 do
   task_exe $i $WS &
 done
 
-while [ 1 -eq 1 ];do
-$PY api/ragflow_server.py
+while [ 1 -eq q ];do
+    $PY api/ragflow_server.py
 done
-wait;
+
+wait;