chore: switch to TOML-based configuration

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Id9e80fa744f3b7e3b8abc260efdc9dd66a6a6964

contrib/pscand.example.toml

@@ -0,0 +1,27 @@
+log_dir = "/var/log/pscand"
+retention_days = 7
+ring_buffer_size = 60
+journal_enabled = true
+file_enabled = true
+
+[scanner_dirs]
+# Directories to load scanner plugins from
+dirs = [
+    "~/.local/share/pscand/scanners",
+]
+
+[scanners.system]
+enabled = true
+interval_secs = 1
+
+[scanners.sensor]
+enabled = true
+interval_secs = 2
+
+[scanners.power]
+enabled = true
+interval_secs = 2
+
+[scanners.proc]
+enabled = true
+interval_secs = 5