feat: v0 — glpi-go client, mglpi CLI, mglpi-mcp, fake-GLPI test suite [#767]

https://projects.knownelement.com/issues/767#note-4191

env.example

@@ -0,0 +1,9 @@
+# mglpi connection env file (copy to ~/.creds/mglpi.env and chmod 600)
+# MGLPI_URL, MGLPI_APP_TOKEN and MGLPI_USER_TOKEN are required;
+# MGLPI_PROFILE_ID is optional (agent mode: auto-switch to this GLPI
+# profile id, e.g. 5 = Hotliner, after InitSession). The file must be
+# 0600 or stricter — mglpi refuses looser files before reading them.
+MGLPI_URL=https://cmdb.knownelement.com/apirest.php
+MGLPI_APP_TOKEN=your-glpi-app-token
+MGLPI_USER_TOKEN=your-glpi-user-token
+MGLPI_PROFILE_ID=0