No OTP Case + Optional OTP

[proffapt]

closes #4

POA:

• [x] Logic for when OTP is not even required
• [x] Implement OTP filling via GMAIL API to be optional
• [x] Optional creds storage
• [x] Optional logging
• [x] Update the changes in the docs - fucking HELL!
  • [x] Function argument should be like: (name1=value1, name2=value2), in the example codes

Release the update:

Remember that this is a MAJOR update, v2.0.0

• [x] PyPi
• [x] GIthub