Add admin component (#6928)

* init version

* relocate

* add s3 bucket link

* refactor handlers into weed/admin folder

* fix login logout

* adding favicon

* remove fall back to http get topology

* grpc dial option, disk total capacity

* show filer count

* fix each volume disk usage

* add filers to dashboard

* adding hosts, volumes, collections

* refactor code and menu

* remove "refresh" button

* fix data for collections

* rename cluster hosts into volume servers

* add masters, filers

* reorder

* adding file browser

* create folder and upload files

* add filer version, created at time

* remove mock data

* remove fields

* fix submenu item highlighting

* fix bucket creation

* purge files

* delete multiple

* fix bucket creation

* remove region from buckets

* add object store with buckets and users

* rendering permission

* refactor

* get bucket objects and size

* link to file browser

* add file size and count for collections page

* paginate the volumes

* fix possible SSRF

https://github.com/seaweedfs/seaweedfs/pull/6928/checks?check_run_id=45108469801

* Update weed/command/admin.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Update weed/command/admin.go

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* fix build

* import

* remove filer CLI option

* remove filer option

* remove CLI options

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

weed/admin/view/app/template_helpers.go

@@ -0,0 +1,84 @@
+package app
+
+import (
+	"fmt"
+	"strconv"
+)
+
+// getStatusColor returns Bootstrap color class for status
+func getStatusColor(status string) string {
+	switch status {
+	case "active", "healthy":
+		return "success"
+	case "warning":
+		return "warning"
+	case "critical", "unreachable":
+		return "danger"
+	default:
+		return "secondary"
+	}
+}
+
+// getHealthColor returns Bootstrap color class for health status
+func getHealthColor(health string) string {
+	switch health {
+	case "excellent":
+		return "success"
+	case "good":
+		return "primary"
+	case "fair":
+		return "warning"
+	case "poor":
+		return "danger"
+	default:
+		return "secondary"
+	}
+}
+
+// formatBytes converts bytes to human readable format
+func formatBytes(bytes int64) string {
+	if bytes == 0 {
+		return "0 B"
+	}
+
+	units := []string{"B", "KB", "MB", "GB", "TB", "PB"}
+	var i int
+	value := float64(bytes)
+
+	for value >= 1024 && i < len(units)-1 {
+		value /= 1024
+		i++
+	}
+
+	if i == 0 {
+		return fmt.Sprintf("%.0f %s", value, units[i])
+	}
+	return fmt.Sprintf("%.1f %s", value, units[i])
+}
+
+// formatNumber formats large numbers with commas
+func formatNumber(num int64) string {
+	if num == 0 {
+		return "0"
+	}
+
+	str := strconv.FormatInt(num, 10)
+	result := ""
+
+	for i, char := range str {
+		if i > 0 && (len(str)-i)%3 == 0 {
+			result += ","
+		}
+		result += string(char)
+	}
+
+	return result
+}
+
+// calculatePercent calculates percentage for progress bars
+func calculatePercent(current, max int) int {
+	if max == 0 {
+		return 0
+	}
+	return (current * 100) / max
+}