Add camera view editing mode #678

Job	Run time
clippy - Ubuntu	1m 23s
stable - Ubuntu - debug	2m 52s
clippy - Windows	2m 54s
rustfmt	12s
stable - Debian (cross to Windows) - debug	2m 0s
stable - Ubuntu - release	3m 52s
stable - Debian (cross to Windows) - release	2m 47s
beta - Ubuntu - debug	2m 47s
beta - Debian (cross to Windows) - debug	2m 13s
stable - Windows - debug	5m 11s
stable - Windows - release	6m 38s
beta - Windows - debug	5m 12s
Publish Wiki	0s
	38m 1s

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