Implemented /profile/{username} endpoint to get complete profile with signed by the current server textures.

Implemented /signing-key endpoint to get public key in der format, used to sign the textures.
Improved logging of errors from http package.
Changed behavior of the /cloaks endpoint

utils/time.go

@@ -0,0 +1,7 @@
+package utils
+
+import "time"
+
+func UnixMillisecond(t time.Time) int64 {
+	return t.UnixNano() / int64(time.Millisecond)
+}

utils/time_test.go

@@ -0,0 +1,16 @@
+package utils
+
+import (
+	"time"
+
+	"testing"
+
+	assert "github.com/stretchr/testify/require"
+)
+
+func TestUnixMillisecond(t *testing.T) {
+	loc, _ := time.LoadLocation("CET")
+	d := time.Date(2021, 02, 26, 00, 43, 57, 987654321, loc)
+
+	assert.Equal(t, int64(1614296637987), UnixMillisecond(d))
+}