term: add term.ui module (part 2) (#6798)

examples/term.ui/event_viewer.v

@@ -0,0 +1,33 @@
+import term.ui as tui
+
+struct App {
+mut:
+	tui &tui.Context = 0
+}
+
+fn event(e &tui.Event, x voidptr) {
+	print('\x1b[0;0H\x1b[2J\x1b[3J') // Clear everything
+	println('V term.input event viewer (press `esc` to exit)\n\n')
+
+	println(e)
+	println('Raw event bytes: "${e.utf8.bytes().hex()}" = ${e.utf8.bytes()}')
+
+	if e.modifiers == tui.ctrl | tui.alt {
+		println('CTRL + ALT')
+	}
+
+	if e.typ == .key_down && e.code == .escape { exit(0) }
+}
+
+mut app := &App{}
+app.tui = tui.init(
+	user_data: app,
+	event_fn: event
+
+	hide_cursor: true
+	capture_events: true
+	frame_rate: 60
+)
+
+println('V term.input event viewer (press `esc` to exit)\n\n')
+app.tui.run()