Add fuzzy string matching to pyprobe.result.Result.get() method

The pyprobe.result.Result.get() method should support fuzzy string matching to enhance usability when querying for results with approximate or similar string keys. This feature will help users retrieve values even when there are minor typos or differences in the key strings, making the method more robust and user-friendly. Consider using a library like fuzzywuzzy or Python's difflib for the implementation. Include tests and documentation for the new fuzzy matching capability.

Example. result.get("Voltage (V)") should return a "did you mean "Voltage [V]".