Devpad 1.0

Version 1.0 final (#4)

* Linux Staging

* Fix

* Update CMakeLists.txt

Switched from console subsystem to Windows on Windows.

* Update build_qscintilla.cmake

Fix for Windows.

* Create installer.nsi

New NSIS script for Windows installer.

* Linux Staging

* Bug fix

Shell script(.sh files) syntax is messed up in dark mode/themes. Text is
too dark on the dark background.

* Final 1.0 commit for linux

* Update package-linux.sh

* Windows Staging

Set Windows icon for app and installer

* lspclient.cpp update

* Update installer.nsi