### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/8006
The category should work well, but the category's downstream seems to be
unable to get the upstream output.
Add the category's output as an attribute.
However, in base.py, there is logic
` if self.component_name.lower().find("switch") < 0 and
self.get_component_name(u) in ["relevant", "categorize"]:
continue`
If goto this cases will not tried to get output from Category (but I do
not have full context about this if logic).
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
When I use the categorization operator, I find that if the keyword I
want to Categorize appears repeatedly in the input, then I cannot judge
the word that appears most frequently. Instead, I simply get the word
that matches and return all the ones that have made the following
changes to the categorize filter.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [x] Refactoring
- [x] Performance Improvement
### What problem does this PR solve?
Fix categorize agent input content not format error
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: wangrui <wangrui@haima.me>
### What problem does this PR solve?
Use consistent log file names, introduced initLogger
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
### What problem does this PR solve?
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [x] Performance Improvement
- [ ] Other (please describe):
