Add voice navigation

[aexol]

Commands:

• Create opens the creation menu when node it's selected you can say Create input or Create output to open input/output menu
• Select node-name selects and centers the node if more nodes are found say next to select next node
• Field same as select but works only on nodes connected to the selected node
• Navigation through the menu should use the categories names inside this menu
• Menu when node is selected opens node menu
• Connect node-name input/output node2-name

[aexol]

We need to choose speech recognition engine @hzub @AnnaLysiuk