[client] Move some sys info to static place (#4446)

This PR refactors the system information collection code by moving static system information gathering to a dedicated location and separating platform-specific implementations. The primary goal is to improve code organization and maintainability by centralizing static info collection logic.

Key changes:
- Centralized static info collection into dedicated files with platform-specific implementations
- Moved `StaticInfo` struct definition to the main static_info.go file
- Added async initialization function `UpdateStaticInfoAsync()` across all platforms

client/system/static_info_update.go

@@ -0,0 +1,35 @@
+//go:build (linux && !android) || (darwin && !ios)
+
+package system
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"github.com/netbirdio/netbird/client/system/detect_cloud"
+	"github.com/netbirdio/netbird/client/system/detect_platform"
+)
+
+func newStaticInfo() StaticInfo {
+	si := StaticInfo{}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+	wg := sync.WaitGroup{}
+	wg.Add(3)
+	go func() {
+		si.SystemSerialNumber, si.SystemProductName, si.SystemManufacturer = sysInfo()
+		wg.Done()
+	}()
+	go func() {
+		si.Environment.Cloud = detect_cloud.Detect(ctx)
+		wg.Done()
+	}()
+	go func() {
+		si.Environment.Platform = detect_platform.Detect(ctx)
+		wg.Done()
+	}()
+	wg.Wait()
+	return si
+}