snort3: add missing config include and general cleanup

snort3: add missing config include and general cleanup

- Delete legacy configuration files homenet.lua and local.lua
- Add snort config 'include' to allow user customizations in the lua
- Enhance 'check' to test generated nftables file
- Suppress inclusion of rules file when doing silent config check
- Suppress warnings on configuration check unless '-v'erbose
- Replace text logging with json logging to reduce footprint and make reports easier
- Fix some typos in the snort.uc template
- Fix up some error messages suggesting solutions

Signed-off-by: Eric Fahlgren <ericfahlgren@gmail.com>