[master < T614] Add SHA256 password encryption

[Josipmrden]

The task includes adding SHA as part of password authorization, which is less secure but a faster way of executing authentication. BCRYPT is still going to be our main authentication method for passwords but an additional flag will be present to run Memgraph with SHA algorithm.

[master < Task] PR

• Check, and update documentation if necessary
• Provide the full content or a guide for the final git message

To keep docs changelog up to date, one more thing to do:

• Write a release note here
• Tag someone from docs team in the comments

[antoniofilipovic]

@Josipmrden minor comments and suggestions. I think we should solve issue with depricated SHA256, it will complain all the time otherwise.

[antoniofilipovic]

Looks good!