Refactor template & test related code (#32938)

Move some legacy code from "base" package to proper packages.

modules/templates/util_format.go

@@ -0,0 +1,37 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package templates
+
+import (
+	"fmt"
+
+	"code.gitea.io/gitea/modules/util"
+)
+
+func timeEstimateString(timeSec any) string {
+	v, _ := util.ToInt64(timeSec)
+	if v == 0 {
+		return ""
+	}
+	return util.TimeEstimateString(v)
+}
+
+func countFmt(data any) string {
+	// legacy code, not ideal, still used in some places
+	num, err := util.ToInt64(data)
+	if err != nil {
+		return ""
+	}
+	if num < 1000 {
+		return fmt.Sprintf("%d", num)
+	} else if num < 1_000_000 {
+		num2 := float32(num) / 1000.0
+		return fmt.Sprintf("%.1fk", num2)
+	} else if num < 1_000_000_000 {
+		num2 := float32(num) / 1_000_000.0
+		return fmt.Sprintf("%.1fM", num2)
+	}
+	num2 := float32(num) / 1_000_000_000.0
+	return fmt.Sprintf("%.1fG", num2)
+}