Refactor code structure for improved readability and maintainability (#473)

* Add ToolTips to Tweaks

Scripts/FileIO/LoadAppsDetailsFromJson.ps1

@@ -0,0 +1,44 @@
+# Read Apps.json and return list of app objects with optional filtering
+function LoadAppsDetailsFromJson {
+    param (
+        [switch]$OnlyInstalled,
+        [string]$InstalledList = "",
+        [switch]$InitialCheckedFromJson
+    )
+
+    $apps = @()
+    try {
+        $jsonContent = Get-Content -Path $script:AppsListFilePath -Raw | ConvertFrom-Json
+    }
+    catch {
+        Write-Error "Failed to read Apps.json: $_"
+        return $apps
+    }
+
+    foreach ($appData in $jsonContent.Apps) {
+        $appId = $appData.AppId.Trim()
+        if ($appId.length -eq 0) { continue }
+
+        if ($OnlyInstalled) {
+            if (-not ($InstalledList -like ("*$appId*")) -and -not (Get-AppxPackage -Name $appId)) {
+                continue
+            }
+            if (($appId -eq "Microsoft.Edge") -and -not ($InstalledList -like "* Microsoft.Edge *")) {
+                continue
+            }
+        }
+
+        $displayName = if ($appData.FriendlyName) { "$($appData.FriendlyName) ($appId)" } else { $appId }
+        $isChecked = if ($InitialCheckedFromJson) { $appData.SelectedByDefault } else { $false }
+
+        $apps += [PSCustomObject]@{
+            AppId = $appId
+            DisplayName = $displayName
+            IsChecked = $isChecked
+            Description = $appData.Description
+            SelectedByDefault = $appData.SelectedByDefault
+        }
+    }
+
+    return $apps
+}