Inconsistency between log and file parser usage

[kzscisoft]

Describe the bug

• Keyword arguments can be provided to log parser but not file parser.
• You can use a class method as a log parser but not a file parser.

To Reproduce

import multiparser.parsing.file as mp_file_parser
import multiparser
import os
import json
class MyRun:
    
    @mp_file_parser.file_parser
    def _my_parser(
        self,
        input_file: str,
        **__):
        return {}, json.load(input_file)
        
    def _my_callback(
        self,
        data,
        metadata
    ):
        print(data)
        
        
        
    def launch(self):
        """Method which launches the simulation and the monitoring.

        By default calls the three methods above, and sets up a FileMonitor for tracking files.
        """        
        # Start an instance of the file monitor, to keep track of log and results files
        with multiparser.FileMonitor(
        ) as self.file_monitor:
            
            # Monitor each file created by a Vector PostProcessor, and upload results to Simvue if file matches an expected form.
            self.file_monitor.track(
                path_glob_exprs =  "test.json",
                parser_func = self._my_parser,
                callback = self._my_callback
            )
            self.file_monitor.run()
            
myrun = MyRun()          
myrun.launch()

Expected behavior

• Behaviour of both parser types consistent.
• Ability to add keyword arguments to file parsers.

Environment (please complete the following information):

• OS: Ubuntu 24.04
• Python version: 3.12