geoip-shell reset runs destructive actions without confirmation

[merquel]

Hi, and first of all thanks for sharing this great and very well documented project!

Issue

The argument geoip-shell reset performs destructive actions with no warning or confirmation prompt.

geoip-shell/geoip-shell-manage.sh

Lines 597 to 602 in 29543d0

	reset)
	rm_iplists_rules
	rm_all_data
	[ -f "$conf_file" ] && { printf '%s\n' "Deleting the config file '$conf_file'..."; rm -f "$conf_file"; }
	rm_setupdone
	die 0 ;;

Because reset/restore are easy to confuse, it’s possible to wipe the config by running the wrong action (don't ask me how I know this :D).

Steps to reproduce

1. Configure geoip-shell
2. Run geoip-shell reset
3. Observe it immediately wipes geoip rules and config without asking.

Proposed change

Add a safeguard against accidental execution:

Are you sure you wish to reset geoip config and firewall geoip rules? (y/N)

[friendly-bits]

Thanks for the suggestion, I'll include this improvement in the next geoip-shell release.