Implementing Github Issues Fixes

[AnthonyOdum]

What is a quick description of the change?

• Increased memory size to address server restarting after requests
• Firebase is only initialized once in master, removing the need for multiple init methods
• Removed start game email functionality
• Merged the EmailType enum & Email classes

Is this fixing an issue?

This closes #44 , closes #57, closes #35 & closes #48

Any additional comments?

[tomatocat]

FYI keywords need to be included to auto-close issues https://docs.github.com/en/enterprise/2.16/user/github/managing-your-work-on-github/closing-issues-using-keywords