Implement flag parsing for Logging.

[ShohamBit]

### Tasks
- [x] Implement `level` flag
- [x] Implement `file` flag
- [x] Implement `aggregation.enabled` flag
- [x] Implement `aggregation.flush-interval` flag
- [x] Implement `filters.include` flags (`msg`, `package`, `file`, `level`, `regex`)
- [x] Implement `filters.exclude` flags (`msg`, `package`, `file`, `level`, `regex`)
- [x] Update configuration file parsing to support the new log section
- [x] Document new flag design
- [x] Test new flag design

The following design describes the CLI flag:

Logging
--log level=<level>
--log file=<path>
--log aggregation.enabled=<true/false>
--log aggregation.flush-interval=<interval>
--log filters.include.msg=<message> (multiple allowed)
--log filters.include.package=<package> (multiple allowed)
--log filters.include.file=<file> (multiple allowed)
--log filters.include.level=<level> (multiple allowed)
--log filters.include.regex=<pattern> (multiple allowed)
--log filters.include.libbpf
--log filters.exclude.msg=<message> (multiple allowed)
--log filters.exclude.package=<package> (multiple allowed)
--log filters.exclude.file=<file> (multiple allowed)
--log filters.exclude.level=<level> (multiple allowed)
--log filters.exclude.regex=<pattern> (multiple allowed)
--log filters.exclude.libbpf

The following design describes the config:

log:
  level: info               # debug, info, warn, error, fatal, panic (default: info)
  file: ""                  # Path to the log file (optional, defaults to stdout)
  aggregation:                 
    enabled: false          # Enable log aggregation (default: false)
    flush-interval: "5s"    # Aggregation interval (e.g., "5s", "1m", "1h") (default: "5s")
  filters:                  # Filter log messages
    include:                # Include messages based on criteria (optional)
      libbpf: true          # Include logs that originate from libbpf
      msg:                    
        - SampleMessage1    # Include messages containing this string 
      package:                 
        - package1          # Include messages from this package
      file:                   
        - file1.go          # Include messages from this file
      level:                  
        - warn              # Include messages with this log level or higher
      regex:
        - ^pattern1         # Include messages matching this regex pattern
    exclude:                # Exclude messages based on criteria (optional)
    libbpf: true            # Exclude logs that originate from libbpf
      msg:
        - ExcludedMessage1  # Exclude messages containing this string
      package:
        - excludedPackage   # Exclude messages from this package
      file:
        - excludedFile.go   # Exclude messages from this file
      level:
        - debug             # Exclude messages with this log level
      regex:
        - ^excludedPattern  # Exclude messages matching this regex pattern

Implementation Notes

• Multiple values: Ensure the implementation correctly handles flags that can accept multiple values (e.g., --log filters.include.msg).
• Regular expressions: Implement proper parsing and handling of regular expressions in filter flags.
• Log level validation: Validate log level values to ensure they are valid.
• Aggregation interval parsing: Implement parsing of the flush-interval value to handle different time units (seconds, minutes, hours).
• Configuration merging: Define how CLI flags and configuration file settings will be merged, with CLI flags potentially overriding config file values.

[ShohamBit]

libbf was missing, add it as filter.include.libbpf