adding log level option (#1)

Reviewed-on: #1
Co-authored-by: jake <jake.young.dev@gmail.com>
Co-committed-by: jake <jake.young.dev@gmail.com>

option.go

@@ -2,9 +2,24 @@ package bolt
 
 type Option func(b *bolt)
 
+type LogLevel int
+
+const (
+	LogLevelAll LogLevel = iota //logs all messages, and errors
+	LogLevelCmd LogLevel = iota //log only commands and responses, and errors
+	LogLevelErr LogLevel = iota //logs only errors
+)
+
 // sets the substring that must be present at the beginning of the message to indicate a command
 func WithIndicator(i string) Option {
 	return func(b *bolt) {
 		b.indicator = i
 	}
 }
+
+// sets the log level to determine how much bolt logs
+func WithLogLevel(lvl LogLevel) Option {
+	return func(b *bolt) {
+		b.logLvl = lvl
+	}
+}