adds a flag for more readable console logs (#1642)

## Description

I was getting frustrated by the readability of logs
in the console, and wanted reduce some of my
eye strain during development.
Adds a hidden "readable-logs" flag for ease of
reading logs during development.

## Type of change

- [x] 🐹 Trivial/Minor

Logs without flag:
<img width="586" alt="image" src="https://user-images.githubusercontent.com/104464746/204873851-acd368d1-2c9c-43ef-bd4b-535896e56ef0.png">

Logs with flag:
<img width="406" alt="image" src="https://user-images.githubusercontent.com/104464746/204873940-8ab3c6fd-24f8-458e-8ea9-8bdd1c27f872.png">

src/pkg/logger/logger.go

@@ -16,6 +16,8 @@ var (
 	// logging level flag
 	// TODO: infer default based on environment.
 	llFlag = "info"
+
+	readableOutput bool
 )
 
 type logLevel int
@@ -28,7 +30,10 @@ const (
 	Disabled
 )
 
-const logLevelFN = "log-level"
+const (
+	logLevelFN     = "log-level"
+	readableLogsFN = "readable-logs"
+)
 
 // adds the persistent flag --log-level to the provided command.
 // defaults to "info".
@@ -37,6 +42,12 @@ const logLevelFN = "log-level"
 func AddLogLevelFlag(parent *cobra.Command) {
 	fs := parent.PersistentFlags()
 	fs.StringVar(&llFlag, logLevelFN, "info", "set the log level to debug|info|warn|error")
+
+	fs.Bool(
+		readableLogsFN, false,
+		"minimizes log output for console readability: removes the file and date, colors the level")
+	//nolint:errcheck
+	fs.MarkHidden(readableLogsFN)
 }
 
 // Due to races between the lazy evaluation of flags in cobra and the need to init logging
@@ -46,6 +57,7 @@ func PreloadLogLevel() string {
 	fs := pflag.NewFlagSet("seed-logger", pflag.ContinueOnError)
 	fs.ParseErrorsWhitelist.UnknownFlags = true
 	fs.String(logLevelFN, "info", "set the log level to debug|info|warn|error")
+	fs.BoolVar(&readableOutput, readableLogsFN, false, "minimizes log output: removes the file and date, colors the level")
 	// prevents overriding the corso/cobra help processor
 	fs.BoolP("help", "h", false, "")
 
@@ -111,7 +123,15 @@ func genLogger(level logLevel) (*zapcore.Core, *zap.SugaredLogger) {
 			cfg.Level = zap.NewAtomicLevelAt(zapcore.FatalLevel)
 		}
 
-		lgr, err = cfg.Build()
+		opts := []zap.Option{}
+
+		if readableOutput {
+			opts = append(opts, zap.WithCaller(false), zap.AddStacktrace(zapcore.DPanicLevel))
+			cfg.EncoderConfig.EncodeTime = zapcore.TimeEncoderOfLayout("15:04:05.00")
+			cfg.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
+		}
+
+		lgr, err = cfg.Build(opts...)
 	} else {
 		lgr, err = zap.NewProduction()
 	}