update architecture diagrams, ipv6 example, include `name` argument to sub_pools

[drewmullen]

Closes: #20 , #19 , #11, #6

• update architecture diagrams
• include ppts for diagrams
• update ipv4 example
• include ipv6 example
• include option for defining a name
• use centralized pre-commit

Wrote but commented out several validations:

• added in logic to validate no more than 3 sub_pools deep defined - rm temporarily because it breaks when pools nested less than 2
• added validation for pool_configurations and sub module pool_config but removed. need to figure out best arrangement of guard rails for that object

Added name option because if you populate name tag on the KEY of the sub_pool it requires a FULL rebuild of the stack to change the name

[drewmullen]

planning to add variable validation for pool_configurations to make sure sub_pools only goes so deep

[drewmullen]

ipv6 tests only run if you set environment variables:

const (
    ipv6_cidr = "IPV6_CIDR"
    message   = "MESSAGE"
    signature = "SIGNATURE"
)