For example, creating new custom layout `["e" . "Name"]` clashes with
`["e" . "Spacemacs"]`. After override `SPC l o` should not show both of
them, but only the override.
Use two different sets of workspaces for each perspective - one
set for graphical frames, and one set for terminal frames.
This is required because workspaces from graphical frames are not
compatible for use in terminal frames.
- add `l` to workspace transient state to go back to layout transient
state
- remove erroneous `l` and `h` keys on layouts transient state
- unique documentation toggle for layouts and workspaces
- reformat and sort transient states documentation