* Add a tabColor parameter to the `new-tab` and `split-panes` command
* Add --tabColor to the command line, to allow bootstrapping with tabs
of different colors
Add another field to NewTerminalArgs. Use this field to set
StartingTabColor in Terminal. This color gets overridden by the color
defined by the profile / VT, however can be overridden with the color
picker.
Since the color is the property of the Terminal, when defined for the
tab this color is associated only with the first pane/terminal of the
tab. Additional panes will not inherit this color (to prevent advanced
resolution, where we need to resolve between the inherited color and the
one specified for the pane).
## Validation Steps Performed
* UT for parameters parsing
* Running system with several tabs of different colors.
* Adding custom actions with colors
* Performing operations like split pane, duplicate and so on
Closes#8075
fd37e1dc9f