feat: replace logrus logger with logf

logf is a minimal logger with no dependencies. this commit should
bring down the binary size.

internal/app/app.go

@@ -4,12 +4,12 @@ import (
 	"github.com/miekg/dns"
 	"github.com/mr-karan/doggo/pkg/models"
 	"github.com/mr-karan/doggo/pkg/resolvers"
-	"github.com/sirupsen/logrus"
+	"github.com/mr-karan/logf"
 )
 
 // App represents the structure for all app wide configuration.
 type App struct {
-	Logger       *logrus.Logger
+	Logger       *logf.Logger
 	Version      string
 	QueryFlags   models.QueryFlags
 	Questions    []dns.Question
@@ -19,7 +19,7 @@ type App struct {
 }
 
 // NewApp initializes an instance of App which holds app wide configuration.
-func New(logger *logrus.Logger, buildVersion string) App {
+func New(logger *logf.Logger, buildVersion string) App {
 	app := App{
 		Logger:  logger,
 		Version: buildVersion,

internal/app/output.go

@@ -15,8 +15,7 @@ func (app *App) outputJSON(rsp []resolvers.Response) {
 	// Pretty print with 4 spaces.
 	res, err := json.MarshalIndent(rsp, "", "    ")
 	if err != nil {
-		app.Logger.WithError(err).Error("unable to output data in JSON")
-		app.Logger.Exit(-1)
+		app.Logger.WithError(err).Fatal("unable to output data in JSON")
 	}
 	fmt.Printf("%s", res)
 }

internal/app/questions.go

@@ -46,8 +46,7 @@ func (app *App) ReverseLookup() {
 	for _, n := range app.QueryFlags.QNames {
 		addr, err := dns.ReverseAddr(n)
 		if err != nil {
-			app.Logger.WithError(err).Error("error formatting address")
-			app.Logger.Exit(2)
+			app.Logger.WithError(err).Fatal("error formatting address")
 		}
 		formattedNames = append(formattedNames, addr)
 	}