Switch friend states to use a bin 2^n pattern

[ShawnClake]

Switch friend states to use a 2^n state. This can then be converted to a binary string. For example if following = 2, friended = 4, and subscribed = 8, then we can store the number 14 which translates to binary as: 1110. Thus we can see the 3 1's correlate to our friend states. Now we can store multiple user relations rather than just 1.

[ShawnClake]

• Rename FriendsManager to 'RelationshipManager'

[ShawnClake]

Higher states can override lower states. This means a relation between two users can be marked as Friends and Blocked simultaneously; however it will appear to both end users that only block has been applied.

State priority is defined by the digit of the relation. The 0th digit is said to have the 0th state position. The 5th digit (Equatable to 16) is said to have the 5th state position.

States reservations:
State positions 0-9 are reserved for official UE states.
State positions 10-19 are reserved for other plugin's modules to inject.
State positions 20-21 are reserved for UE_BLOCKED and UE_DELETED
State positions above 21 will override and UE_BLOCKED and UE_DELETED and thus must be used with extreme caution.

[ShawnClake]

To the best of my knowledge this has been added. Injecting bond states is in a 50/50 state. Currently, injecting bond states wont actually effect the application in any way. This will be fixed in a later release. I will close this for now.