Add example sketch for CharShift plugin

Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>

examples/Keystrokes/CharShift/CharShift.ino

@@ -0,0 +1,43 @@
+// -*- mode: c++ -*-
+
+#include <Kaleidoscope.h>
+
+#include <Kaleidoscope-CharShift.h>
+
+// *INDENT-OFF*
+KEYMAPS(
+  [0] = KEYMAP_STACKED
+  (
+      XXX,          Key_1, Key_2, Key_3, Key_4, Key_5, Key_NoKey,
+      Key_Backtick, Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Tab,
+      Key_PageUp,   Key_A, Key_S, Key_D, Key_F, Key_G,
+      Key_PageDown, Key_Z, Key_X, Key_C, Key_V, Key_B, Key_Escape,
+
+      Key_LeftControl, Key_Backspace, Key_LeftGui, Key_LeftShift,
+      XXX,
+
+      XXX,       Key_6, Key_7, Key_8, Key_9, Key_0,     Key_skip,
+      Key_Enter, Key_Y, Key_U, Key_I, Key_O, Key_P,     Key_Equals,
+                 Key_H, Key_J, Key_K, Key_L, CS(2),     Key_Quote,
+      Key_skip,  Key_N, Key_M, CS(0), CS(1), Key_Slash, Key_Minus,
+
+      Key_RightShift, Key_RightAlt, Key_Spacebar, Key_RightControl,
+      XXX
+   ),
+)
+// *INDENT-ON*
+
+KALEIDOSCOPE_INIT_PLUGINS(CharShift);
+
+void setup() {
+  CS_KEYS(
+    kaleidoscope::plugin::CharShift::KeyPair(Key_Comma, Key_Semicolon),              // CS(0)
+    kaleidoscope::plugin::CharShift::KeyPair(Key_Period, LSHIFT(Key_Semicolon)),     // CS(1)
+    kaleidoscope::plugin::CharShift::KeyPair(LSHIFT(Key_Comma), LSHIFT(Key_Period)), // CS(2)
+  );
+  Kaleidoscope.setup();
+}
+
+void loop() {
+  Kaleidoscope.loop();
+}

examples/Keystrokes/CharShift/sketch.json

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+{
+  "cpu": {
+    "fqbn": "keyboardio:avr:model01",
+    "port": ""
+  }
+}