detect if in virtual env and prompt to install open-vm-tools (#41)

* test option for virtualization

* add placeholder text and title

* make use of hypervisor to identify if in vm

* update recipe.json based on @kra-mo suggestion

Co-authored-by: kramo <93832451+kra-mo@users.noreply.github.com>

* Update recipe.json

Co-authored-by: kramo <93832451+kra-mo@users.noreply.github.com>

Co-authored-by: kramo <93832451+kra-mo@users.noreply.github.com>

recipe.json

@@ -118,6 +118,31 @@
                 }
             ]
         },
+        "vm": {
+            "template": "yes-no",
+            "display-conditions": [
+                "grep 'hypervisor' /proc/cpuinfo"
+            ],
+            "icon": "application-x-appliance-symbolic",
+            "title": "Open VM Tools",
+            "description": "Choose whether to install Open VM Tools for the virtual machine.",
+            "buttons": {
+                "yes": "Yes, install",
+                "no": "Skip",
+                "info": {
+                    "type": "text",
+                    "title": "About Open VM Tools",
+                    "text": "Open VM Tools can be used in GNOME Boxes."
+                }
+            },
+            "final": [
+                {
+                    "if": "vm",
+                    "type": "command",
+                    "commands": ["sudo apx --sys install -y open-vm-tools"]
+                }
+            ]
+        },
         "extra": {
             "template": "preferences",
             "icon": "vanilla-puzzle-piece-symbolic",