Make Orbital Login Window Unclosable (scheme, window)

Created by: InsidiousMind

scheme: added exit to list of parameters in calls to Window::new in SchemeMut. Added conditions for handling window.resizable and window.exit events in OrbitalScheme. If exit is false, modified to write 'e' to file in SchemeMut

window: Added exit bool to Window struct, as well as exit in parameters of function new. Added handling to not render Exit if Exit flag is passed. modified to write "e" to file if Exit flag is false

Other pull requests which fix this issue but in different git submodules are under the same branch name (make-orbital-login-unclosable)

this also fixes the issue with the Resizable event firing even when the window is not supposed to be resizable. (Issue #11 (closed) )