Add table linode_firewall Closes #54

[ParthaI]

Example query results

Results

> select
  f.id,
  f.label,
  o ->> 'label' as outbound_label,
  o ->> 'ports' as outbound_ports,
  o ->> 'action' as outbound_action,
  o ->> 'protocol' as outbound_protocol,
  o ->> 'description' as outbound_description,
  o -> 'addresses' as outbound_addresses
from
  linode_firewall as f,
  jsonb_array_elements(rules -> 'outbound') as o;
+--------+---------+----------------------+----------------+-----------------+-------------------+----------------------+--------------------+
| id     | label   | outbound_label       | outbound_ports | outbound_action | outbound_protocol | outbound_description | outbound_addresses |
+--------+---------+----------------------+----------------+-----------------+-------------------+----------------------+--------------------+
| 756626 | testf43 | accept-outbound-HTTP | 80             | DROP            | TCP               | tsss                 | {"ipv6":["::/0"]}  |
+--------+---------+----------------------+----------------+-----------------+-------------------+----------------------+--------------------+

Time: 1.5s. Rows returned: 1. Rows fetched: 1. Hydrate calls: 0.

Scans:
  1) linode_firewall.linode: Time: 1.4s. Fetched: 1. Hydrates: 0.

> select
  f.id,
  f.label,
  i ->> 'label' as inbound_label,
  i ->> 'ports' as inbound_ports,
  i ->> 'action' as inbound_action,
  i ->> 'protocol' as inbound_protocol,
  i ->> 'description' as inbound_description,
  i -> 'addresses' as inbound_addresses
from
  linode_firewall as f,
  jsonb_array_elements(rules -> 'inbound') as i;
+--------+---------+---------------------+---------------+----------------+------------------+---------------------+------------------------+
| id     | label   | inbound_label       | inbound_ports | inbound_action | inbound_protocol | inbound_description | inbound_addresses      |
+--------+---------+---------------------+---------------+----------------+------------------+---------------------+------------------------+
| 756626 | testf43 | accept-inbound-HTTP | 80            | ACCEPT         | TCP              | testing             | {"ipv4":["0.0.0.0/0"]} |
+--------+---------+---------------------+---------------+----------------+------------------+---------------------+------------------------+

Time: 54ms. Rows returned: 1. Rows fetched: 1 (cached). Hydrate calls: 0.

Scans:
  1) linode_firewall.linode: Time: 5ms. Fetched: 1 (cached). Hydrates: 0.