Improve cmake and GUI (#13)

+ Packaging and CI for Windows, Mac, Linux
+ Debian package, NSIS Windows installer, OSX appbundle
+ Example application using libqtk
+ Component installation for `qtk`, `libqtk`, or `collection` with cmake

src/app/debugconsole.h

@@ -0,0 +1,140 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
+## About: Debug console for qtk views                                         ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+##############################################################################*/
+
+#ifndef QTK_DEBUGCONSOLE_H
+#define QTK_DEBUGCONSOLE_H
+
+#include <QApplication>
+#include <QDockWidget>
+#include <QPlainTextEdit>
+#include <QVBoxLayout>
+
+#include "qtkwidget.h"
+
+namespace Ui {
+  class DebugConsole;
+}
+
+namespace Qtk {
+  class DebugConsole : public QDockWidget {
+      Q_OBJECT;
+
+    public:
+      /**
+       * Construct a new DebugConsole.
+       * Assigns a default name to the console using `key + "Debugger"`
+       *
+       * @param owner Parent widget for this console or nullptr if no parent.
+       *    If this parameter inherits from QMainWindow we will add this dock
+       *    widget to the window.
+       * @param key The objectName associated with the attached QtkWidget.
+       */
+      DebugConsole(QWidget * owner, const QString & key);
+
+      /**
+       * Construct a new DebugConsole.
+       *
+       * @param owner Parent widget for this console or nullptr if no parent.
+       *    If this parameter inherits from QMainWindow we will add this dock
+       *    widget to the window.
+       * @param key The objectName associated with the attached QtkWidget.
+       * @param name The objectName to associate with this DebugConsole.
+       */
+      DebugConsole(QWidget * owner, const QString & key, const QString & name);
+
+      ~DebugConsole() = default;
+
+    public slots:
+      /*************************************************************************
+       * Public Qt slots
+       ************************************************************************/
+
+      /**
+       * Log a message to the DebugConsole text view.
+       *
+       * @param message The message to log.
+       * @param context The DebugContext to use for the message.
+       *    Default value is Status.
+       */
+      inline void sendLog(QString message, DebugContext context = Status) {
+        mConsole->setTextColor(logColor(context));
+        mConsole->append(logPrefix(message, context));
+      }
+
+      /**
+       * Sets the window title for the DebugConsole. This will appear in the
+       * widget title bar and within any context menu actions.
+       *
+       * @param name Base name for the DebugConsole window.
+       */
+      inline void setTitle(QString name) {
+        setWindowTitle(name + " Debug Console");
+      }
+
+    private:
+      /**
+       * @param context Log context severity level.
+       * @return QColor corresponding with the message context.
+       */
+      [[nodiscard]] QColor logColor(const DebugContext & context) const {
+        switch(context) {
+          case Status:
+            return Qt::GlobalColor::darkGray;
+          case Debug:
+            return Qt::GlobalColor::white;
+          case Warn:
+            return Qt::GlobalColor::yellow;
+          case Error:
+            return Qt::GlobalColor::red;
+          case Fatal:
+            return Qt::GlobalColor::magenta;
+          default:
+            return Qt::GlobalColor::darkYellow;
+        }
+      }
+
+      /**
+       * Prefixes a log message to add context level.
+       *
+       * @param message The message to prefix.
+       * @param context The log context severity level.
+       * @return The log message prefixed with the DebugContext level.
+       */
+      [[nodiscard]] QString logPrefix(
+          QString & message, const DebugContext & context) {
+        QString prefix;
+        switch(context) {
+          case Status:
+            prefix = "[Status]: ";
+            break;
+          case Debug:
+            prefix = "[Debug]: ";
+            break;
+          case Warn:
+            prefix = "[Warn]: ";
+            break;
+          case Error:
+            prefix = "[Error]: ";
+            break;
+          case Fatal:
+            prefix = "[Fatal]: ";
+            break;
+          default:
+            prefix = "[No Context]: ";
+            break;
+        }
+        message = prefix + message.replace("\n", "\t\n" + prefix);
+        return message;
+      }
+
+      Ui::DebugConsole * ui_;
+      QTextEdit * mConsole;
+  };
+}  // namespace Qtk
+
+#endif  // QTK_DEBUGCONSOLE_H