Searching also for DEV-Guideline for snapins

[BH2005 (Bernd Holzhauer)]

now I have understand the DEV for that

CMK-exchange/snapins/cmk-ticket-system/ticket_system_snapin_package at main · bh2005/CMK-exchange

test was a snapin for the ticket-system:

jbelkacemi - Checkmk Exchange

next will follow for:

JIRA, SNOW, GLPI, ZAMMAD

I also try to write a guideline for that