1. Proposed title of this feature request

Multiline log detection based on date and time staring.

2. What is the nature and description of the request?

In addition to supported multi-line exception detection, CU needs a multiline line detection based on time format.

e.g. YYY-MM-DD HH:MM:SS format as a start of a new line.  

2024-04-02 08:37:16.896 INFO 1 --- [nio-8080-exec-1] c.e.r.demo.controller.LibraryController :
{
  "header": {
   "comTranCode": "ReadControlDates",
   "comAnsSysId": "RAD",
   "comUserId": "LA187",
   "comLocalId": "K"
 },
 "data": {}
}
~~~~~ NEW LINE ~~~~
2024-04-02 08:38:16.896 INFO 1 --- [nio-8080-exec-1] c.e.r.demo.controller.LibraryController :
{
  "header": {
    "comTranCode": "ReadControlDates",
    "comAnsSysId": "RAD",
    "comUserId": "LA188",
    "comLocalId": "K"
  },
  "data": {}
}

3. Why does the customer need this? (List the business requirements here)

The customer needs it as it would help customer easily seek the full logs with partial matching string while keeping the good visibility. 

4. List any affected packages or components.

OpenShift Logging Operator, Vector collector