Add bnhmeijer-ca-certificates package to sources and repository

sources/bnhmeijer_ca_certificates/packaging/bnhmeijer-ca-certificates/DEBIAN/postinst

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+    configure|abort-upgrade)
+        if command -v update-ca-certificates >/dev/null 2>&1; then
+            echo "Updating system trusted CA certificates..."
+            update-ca-certificates >/dev/null 2>&1 || true
+        fi
+    ;;
+esac
+exit 0

sources/bnhmeijer_ca_certificates/packaging/bnhmeijer-ca-certificates/DEBIAN/postrm

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+    remove|purge|disappear)
+        if command -v update-ca-certificates >/dev/null 2>&1; then
+            echo "Removing certificate from system trust store..."
+            update-ca-certificates --fresh >/dev/null 2>&1 || true
+        fi
+    ;;
+esac
+exit 0