add reminder system

[realcodywburns]

create a basic system for 'reminder'
it will call entities with the component and evaluate if it ia time to run again. If now() is after the reminder time, emit a system message wwith the entity id and system name

• should start as a 'set interval'
• poll the 'get entity list by component' function
• then get component for each entity
• emit messages as needed

it should store an array [
it should store a unix time stamp for when it will run next
it should have a systemName that is stored
]

• design component schema
• create test data
• test on db types
• e2e
• document