Seed support for random generator

[daemon3000]

Connection with issue(s)

Resolve issue #25

Connected to #29

Testing and Review Notes

All previous unit tests should pass and also added a new test for random seeds.

In addition to adding support for seeds I also did some refactoring on the RandomGenerator class. In the original implementation all RandomGenerator instances were using the same Random instance under the hood which meant you couldn't have multiple Faker instances running on different seeds. In the new implementation each RandomGenerator has it's own Random instance and seed.

To Do

• double check the original issue to confirm it is fully satisfied
• add testing notes and screenshots in PR description to help guide reviewers

[drager]

Thank you!