log: encapsulate logger

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

include/util/loglevel.hh

@@ -0,0 +1,14 @@
+#pragma once
+
+namespace matar {
+enum class LogLevel {
+    Off   = 1 << 0,
+    Error = 1 << 1,
+    Warn  = 1 << 2,
+    Info  = 1 << 3,
+    Debug = 1 << 4
+};
+
+void
+set_log_level(LogLevel level);
+}

include/util/meson.build

@@ -0,0 +1,3 @@
+headers += files(
+  'loglevel.hh'
+)