Add Drive Health (gustav0ar/drive-health) (#58)

* add Drive Health

* declare optional package manager commands

* use live Drive Health screenshot

* hide redundant dependency subtitle

* fix drive error counter alerts

* stabilize transient SMART availability

* address collector packaging review

* refactor: use generic collector service name

* test: harden collector packaging checks

drive-health/tests/fixtures/bin/lsblk

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -eu
+
+case " $* " in
+  *" --nodeps "*)
+    printf '%s\n' "/dev/sda disk 1" "/dev/nvme0n1 disk 0"
+    ;;
+  *" --json "*)
+    printf '%s\n' '{"blockdevices":[' \
+      '{"name":"sda","kname":"sda","path":"/dev/sda","type":"disk","tran":"sata","rota":true,"size":1000000000,"model":"Fixture SATA","serial":"SATA1","mountpoints":[]},' \
+      '{"name":"nvme0n1","kname":"nvme0n1","path":"/dev/nvme0n1","type":"disk","tran":"nvme","rota":false,"size":2000000000,"model":"Fixture NVMe","serial":"NVME1","mountpoints":[]}' \
+      ']}'
+    ;;
+  *)
+    echo "unexpected lsblk arguments: $*" >&2
+    exit 2
+    ;;
+esac