packaging: Add Debian packaging

Fixes: #148

debian/changelog

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+proxlb (1.1.0) stable; urgency=medium
+
+  * Refactored code base of ProxLB. (Closes: #114)
+
+ -- Florian Paul Azim Hoberg <gyptazy@gyptazy.com>  Mon, 17 Mar 2025 18:55:02 +0000

debian/control

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+Source: proxlb
+Maintainer: Florian Paul Azim Hoberg <gyptazy@gyptazy.com>
+Section: admin
+Priority: optional
+Standards-Version: 4.5.0
+Build-Depends: debhelper-compat (= 13), dh-python, python3-all, python3-setuptools
+
+Package: proxlb
+Architecture: all
+Depends: ${python3:Depends}, ${misc:Depends}, python3-requests, python3-urllib3, python3-proxmoxer, python3-yaml 
+Description: A DRS alike Load Balancer for Proxmox Clusters
+ An advanced DRS alike loadbalancer for Proxmox clusters that also supports maintenance modes and affinity/anti-affinity rules.

debian/install

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+proxlb /usr/lib/python3/dist-packages/
+service/proxlb.service /lib/systemd/system/

debian/postinst

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+#!/bin/bash
+set -e
+
+#DEBHELPER#
+if [ "$1" = "configure" ]; then
+    systemctl enable proxlb.service
+    systemctl restart proxlb.service || true
+
+    # Create the 'plb' user if it does not exist
+    if ! id "plb" &>/dev/null; then
+        useradd --system --home /var/lib/proxlb --create-home --shell /usr/sbin/nologin --group nogroup plb
+        echo "User 'plb' created."
+    else
+        echo "User 'plb' already exists, skipping creation."
+    fi
+fi

debian/prerm

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+#!/bin/bash
+set -e
+
+#DEBHELPER#
+if [ "$1" = "remove" ]; then
+    systemctl stop proxlb.service || true
+    systemctl disable proxlb.service || true
+
+    # Remove the 'plb' user if it exists
+    if id "plb" &>/dev/null; then
+        userdel --remove plb
+        echo "User 'plb' removed."
+    else
+        echo "User 'plb' does not exist, skipping removal."
+    fi
+fi

debian/rules

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+#!/usr/bin/make -f
+%:
+	dh $@ --with python3 --buildsystem=pybuild
+

debian/source/format

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+3.0 (native)