Refactor configuration data export and template loading functions

- Updated Export-ConfigurationData to use resolved configuration data directly and added error handling for missing data.
- Enhanced Load-Templates to streamline category loading and improve error handling for missing template directories.
- Removed Merge-ConfigurationData function as it is no longer needed.
- Refactored Merge-Templates to improve merging logic and handle default files more effectively.
- Introduced Get-TemplatePreviewData function to handle template preview data retrieval and merging.
- Added Import-OrderedPowerShellDataFile function to support ordered hashtable imports.
- Updated Update-ParametersPanel to handle parameter and variable tab updates more efficiently.
- Improved Update-TreeView to handle cases where resources are not found.
- Added new parameters to Environment.Default.psd1 for Active Directory configuration.
- Created new template BGW-LAN.psd1 for domain configuration.

Templates/Environment/Environment.Default.psd1

@@ -42,6 +42,89 @@
                 }
             }
         }
+
+        ForestMode = @{
+            Type = 'string'
+            DefaultValue = 'WinThreshold'
+            AllowedValues = @(
+                'Win2012R2',
+                'WinThreshold'
+            )
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Funktionsebene des Active-Directory-Forests.'
+                    'en-US' = 'Functional level of the Active Directory forest.'
+                }
+            }
+        }
+
+        DomainMode = @{
+            Type = 'string'
+            DefaultValue = 'WinThreshold'
+            AllowedValues = @(
+                'Win2012R2',
+                'WinThreshold'
+            )
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Funktionsebene der Active-Directory-Domaene.'
+                    'en-US' = 'Functional level of the Active Directory domain.'
+                }
+            }
+        }
+
+        DefaultSiteName = @{
+            Type = 'string'
+            DefaultValue = 'Default-First-Site-Name'
+            Required = $true
+            MinLength = 1
+            MaxLength = 64
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Standard-AD-Sitename fuer Domaenencontroller und Subnetze.'
+                    'en-US' = 'Default AD site name for domain controllers and subnets.'
+                }
+            }
+        }
+
+        DefaultSubnet = @{
+            Type = 'string'
+            DefaultValue = ''
+            Required = $false
+            Pattern = '^$|^\d{1,3}(\.\d{1,3}){3}/\d{1,2}$'
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Optionales Standard-Subnetz im CIDR-Format.'
+                    'en-US' = 'Optional default subnet in CIDR notation.'
+                }
+            }
+        }
+
+        DomainAdministratorCredentialName = @{
+            Type = 'string'
+            DefaultValue = 'DomainAdministrator'
+            Required = $true
+            Sensitive = $true
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Name der Credential-Referenz fuer den Domaenenadministrator.'
+                    'en-US' = 'Name of the credential reference for the domain administrator.'
+                }
+            }
+        }
+
+        SafeModeAdministratorPasswordSecretName = @{
+            Type = 'string'
+            DefaultValue = 'SafeModeAdministratorPassword'
+            Required = $true
+            Sensitive = $true
+            Metadata = @{
+                Description = @{
+                    'de-DE' = 'Name der Secret-Referenz fuer das Safe-Mode-Administrator-Kennwort.'
+                    'en-US' = 'Name of the secret reference for the safe mode administrator password.'
+                }
+            }
+        }
     }
 
     Resources = @{
@@ -158,4 +241,4 @@
         }
     }
 }
-}
+}