Fix for -X<Method> parsing

[shreys7]

This PR fixes postmanlabs/postman-app-support#7806

Issue:
Hardcoded regex match logic for replacing -XPOST with -X POST was present insanitizeArgs function for the commander to parse the method correctly. This causes problems as if -X is present in header/domain/body, it would replace it too

Fix:

1. Loop through the sanitizedArgs array
2. Find an index i that matches the pattern -X* and not exactly equal to -X.
3. Look at index i-1, if that is not one of the supported args registered in commander, then it suggests it would be for the method name.
4. Split the arg and get the method name, insert it at index i+1 and set value at index i to be -X.

Example:

sanitizedArgs = ['curl', '-XPOST', 'https://domain.com', '-H', 'key: -Xvalue']

after the above steps:

sanitizedArgs = ['curl', '-X', 'POST', 'https://domain.com', '-H', 'key: -Xvalue']