feat: apt's proxy on a Proxmox VE node (NetOrk/netork#1397)

The node is Debian: AptProxyMixin gives it get_package_proxy(),
get_package_proxy_report(), check_package_proxy() and the fix
configure_package_proxy(), as on any Debian host. Logged in as root, the
transports are the exec path; the file is written without an exit inside
_rc's braces, which would end the shell before the status (see #30).

Requires napalm-device-types 4.22.0; version 0.7.0.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "napalm-proxmox"
-version = "0.6.0"
+version = "0.7.0"
 description = "NAPALM driver for Proxmox VE (classic Linux networking, SDN, OVS)"
 readme = "README.md"
 license = { text = "Apache-2.0" }
@@ -25,7 +25,7 @@ classifiers = [
 requires-python = ">=3.9"
 dependencies = [
     "napalm>=5.0.0",
-    "napalm_device_types>=4.20.0",
+    "napalm_device_types>=4.22.0",
     "paramiko>=5.0.0",  # CVE-2026-44405; imported directly for SSH fallback (driver.py)
     "proxmoxer>=2.0.0",
     "netaddr>=0.9.0",