vboxmanage-*: add page (#11598)

* VBoxManage-unregistervm : create & write markdown

* VBoxManage-clonevm : create & write markdown

* VBoxManage-createvm : create & write markdown

* VBoxManage-export : create & write markdown

* VBoxManage-import : create & write markdown

* VBoxManage-registervm : create & write markdown

* VBoxManage-registervm : add Title

* VBoxManage-unregistervm : add Title

* vboxmamange : correct typo

* Update pages/common/vboxmanage-clonevm.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* vboxmamange-* : rewrite to infinitive tense + change name exemple

* vboxmamange-* : change name exemple

* vboxmamange-* : add colon + add empty line

* Update pages/common/vboxmanage-import.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* Update pages/common/vboxmanage-import.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* Update pages/common/vboxmanage-import.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* Update pages/common/vboxmanage-import.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* Update pages/common/vboxmanage-import.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* vboxmanage-createvm : fix typo

* vboxmanage-export/import/clonevm : fix typo

* Update pages/common/vboxmanage-clonevm.md

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

* vboxmanage-registervm/createVM/cloneVM : correct password option error + correct typo

* VBoxManage-export : correct page

* vboxmanage-createvm : correct typo ostype

* vboxmanage-* : fix typo

* Update vboxmanage-registervm.md

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/common/vboxmanage-clonevm.md

@@ -0,0 +1,20 @@
+# vboxmanage-clonevm
+
+> Creates a clone of an existing virtual machine (VM).
+> More information: <https://www.virtualbox.org/manual/ch08.html#vboxmanage-clonevm>.
+
+- Clone the specified VM:
+
+`VBoxManage clonevm {{vm_name}}`
+
+- Specify a new name for the new VM:
+
+`VBoxManage clonevm {{vm_name}} --name {{new_vm_name}}`
+
+- Indicate the folder where the new VM configuration is saved:
+
+`VBoxManage clonevm {{vm_name}} --basefolder {{path/to/directory}}`
+
+- Store the cloned VM in VirtualBox:
+
+`VBoxManage clonevm {{vm_name}} --register`