Fix: Improve MediasoupError description readability

[sharukmsd]

Problem

When catching MediasoupError, the error description was not properly accessible through localizedDescription, resulting in generic error messages like "MediasoupError error 4" instead of the actual detailed error description.

Solution

Added LocalizedError protocol conformance to MediasoupError to properly expose the underlying error descriptions. This makes error messages more descriptive and helpful for debugging.

Changes

• Made MediasoupError conform to LocalizedError
• Implemented errorDescription property to provide detailed error messages
• Error messages now include the full context of the underlying error

Example

Before:

catch error {
print(error.localizedDescription)
// Prints: "MediasoupError error 4"
}

After:

catch error {
print(error.localizedDescription)
// Prints: "Unknown error: [json.exception.parse_error.101] parse error at line 1..."
}

This change helps developers better understand and debug issues.