[TASK] Make a CreateFlag function in flags.go

[catpawzz]

Task Description
Create a CreateFlag and perhap a Delete- and ModifyFlag function in the flags.go file, so that the admin CLI does not need extra code and everthing for flags is actually managed within that flags.go file

Steps to complete

• CreateFlag function
• DeleFlag function
• ModifyFlag function

Related info
Code remake/rewamp