Added pretty download UI

Closes #1

source/lunch/term.d

@@ -0,0 +1,39 @@
+module lunch.term;
+
+version (Windows)
+{
+    import core.sys.windows.windows;
+}
+
+
+struct TermSize
+{
+    int width, height;
+}
+
+TermSize termSize()
+{
+    version (Windows)
+    {
+        CONSOLE_SCREEN_BUFFER_INFO csbi;
+        int columns, rows;
+
+        GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
+        return TermSize(
+            csbi.srWindow.Right - csbi.srWindow.Left + 1,
+            csbi.srWindow.Bottom - csbi.srWindow.Top + 1,
+        );
+    }
+    
+    return TermSize(80, 25);  // Default for windows cmd
+}
+
+int termWidth()
+{
+    return termSize().width;
+}
+
+int termHeight()
+{
+    return termSize().height;
+}