Support filter by file with file pattern and literal configuration

### Background

GitProxy currently supports commit message, commit diff and commit e-mail domain scanning. A common use case that is not supported is file name filtering and scanning.

### Vision 🪄 

```json
"message": {
  "block": {
    "literals": ["xlsx", "csv"],
    "patterns": [".*.txt"]
  }
},
```
```[tasklist]
### Tasks
```
