✨ Add bep.JSON helper for JSON assertion in tests

- Create internal/testutil/bep package with JSON helper
- Use bep.JSON in formatters/json_test.go, models/entry_test.go, and models/meta_test.go

models/meta_test.go

@@ -7,6 +7,7 @@ import (
 	"testing"
 	"time"
 
+	"codeberg.org/danjones000/my-log/internal/testutil/bep"
 	"github.com/nalgeon/be"
 )
 
@@ -103,10 +104,7 @@ func TestMetasJson(t *testing.T) {
 	exp := `{"me":41,"you":false}`
 	o, err := json.Marshal(ms)
 	be.Err(t, err, nil)
-	var got, want any
-	json.Unmarshal([]byte(exp), &want)
-	json.Unmarshal(o, &got)
-	be.Equal(t, got, want)
+	bep.JSON(t, o, []byte(exp))
 }
 
 func TestMetasJsonUnmarshal(t *testing.T) {