add(mode): stormshield api vpn tunnels

[garnier-quentin]

Description

New mode to monitor stormshield vpn tunnels.

Type of change

• Patch fixing an issue (non-breaking change)
• New functionality (non-breaking change)
• Breaking change (patch or feature) that might cause side effects breaking part of the Software

Target serie

• 22.10.x
• 23.04.x
• 23.10.x
• 24.04.x
• master

How this pull request can be tested ?

Stormshield v4 is needed (v3 doesn't have API commands for monitoring vpn tunnels).

$ perl centreon_plugins.pl --plugin=network::stormshield::api::plugin --mode=list-vpn-tunnels --hostname=10.0.0.1 --api-username=admin --api-password=xxxx --verbose --disco-show
$ perl centreon_plugins.pl --plugin=network::stormshield::api::plugin --mode=vpn-tunnels --hostname=10.0.0.1 --api-username=admin --api-password=xxxx --verbose --filter-name="xxx"

Checklist

Community contributors & Centreon team

• I have followed the coding style guidelines provided by Centreon
• I have commented my code, especially new classes, functions or any legacy code modified. (docblock)
• I have commented my code, especially hard-to-understand areas of the PR.
• I have rebased my development branch on the base branch (master, maintenance).