added way to add objects

JSONfunctions.psm1

@@ -0,0 +1,28 @@
+function Get-ServerConfig {
+    param(
+        [string]$Path = ".\servers.json"
+    )
+
+    if (-not (Test-Path $Path)) {
+        throw "Config-Datei nicht gefunden: $Path"
+    }
+
+    return Get-Content $Path -Raw | ConvertFrom-Json
+}
+
+function Set-ServerConfig {
+    param(
+        [string]$Path = ".\servers.json",
+        [string]$Name
+    )
+
+    $servers = Get-ServerConfig -Path $Path
+
+    $server = $servers.groups.TST | Where-Object {$_.name -eq $Name}
+    $server | Add-Member -MemberType NoteProperty -Name "role" -Value "web"
+
+    $servers | ConvertTo-Json -Depth 10 | Set-Content $Path
+
+
+    return $server
+}

servers.json

@@ -1,15 +1,26 @@
 {
   "groups": {
     "TST": [
-      { "name": "serverTST1" },
-      { "name": "serverTST2" }
+      {
+        "name": "serverTST1",
+        "role": "web"
+      },
+      {
+        "name": "serverTST2"
+      }
     ],
     "ABN": [
-      { "name": "serverABN1" }
+      {
+        "name": "serverABN1"
+      }
     ],
     "PRD": [
-      { "name": "serverPRD1" },
-      { "name": "serverPRD2" }
+      {
+        "name": "serverPRD1"
+      },
+      {
+        "name": "serverPRD2"
+      }
     ]
   }
-}
+}