logging: expose the log level with a function

The log level needs to exposed so Rust plugins can bootstrap
themselves with the correct login to SCLogNotice!(), etc work
as expected.

src/util-debug.c

@@ -971,6 +971,11 @@ static inline void SCLogSetLogLevel(SCLogInitData *sc_lid, SCLogConfig *sc_lc)
     return;
 }
 
+SCLogLevel SCLogGetLogLevel(void)
+{
+    return sc_log_global_log_level;
+}
+
 static inline const char *SCLogGetDefaultLogFormat(void)
 {
     const char *prog_ver = GetProgramVersion();

src/util-debug.h

@@ -575,4 +575,6 @@ void SCLogRegisterTests(void);
 
 void SCLogLoadConfig(int daemon, int verbose);
 
+SCLogLevel SCLogGetLogLevel(void);
+
 #endif /* __UTIL_DEBUG_H__ */