samples: Add tone melody

- Use `tone` and `noTone` functions to play a melody on piezo buzzer.
- Taken from https://github.com/arduino/arduino-examples/blob/main/examples/02.Digital/toneMelody/toneMelody.ino
- I have only tested on LED since I do not have a buzzer.

Signed-off-by: Ayush Singh <[email protected]>

Author: Ayush1325

samples/tone_melody/CMakeLists.txt

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+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+cmake_path(SET ZephyrBase $ENV{ZEPHYR_BASE})
+set(DTC_OVERLAY_FILE ${ZephyrBase}/../modules/lib/Arduino-Zephyr-API/variants/${BOARD}/${BOARD}.overlay)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(tone_melody)
+
+target_sources(app PRIVATE src/main.cpp)
+
+zephyr_compile_options(-Wno-unused-variable -Wno-comment)

samples/tone_melody/Kconfig

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+#
+# Copyright (c) 2024 Ayush Singh <[email protected]>
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+mainmenu "Tone melody sample application"
+
+config TONE_OUT_DIGITAL_PIN_NUMBER
+	int "Buzzer Pin Number"
+	default 8
+
+source "Kconfig.zephyr"

samples/tone_melody/README.rst

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+.. _blinky-tone-sample:
+
+Tone Melody
+############
+
+Overview
+********
+
+This Arduino sample Plays a melody.
+
+Requirements
+************
+
+Your board must:
+
+#. Have piezo buzzer connected via a GPIO pin.
+#. GPIO pin can be selected using CONFIG_TONE_OUT_DIGITAL_PIN_NUMBER.
+
+Building and Running
+********************
+
+Build and flash Blinky as follows,
+
+```sh
+$> west build  -p -b arduino_nano_33_ble samples/basic/tone_melody/ -DZEPHYR_EXTRA_MODULES=/home/$USER/zephyrproject/modules/lib/Arduino-Core-Zephyr
+
+$> west flash --bossac=/home/$USER/.arduino15/packages/arduino/tools/bossac/1.9.1-arduino2/bossac
+```
+
+After flashing, the buzzer starts to play a melody.
+
+Adding board support
+********************
+
+To add support for your board, set CONFIG_TONE_OUT_DIGITAL_PIN_NUMBER
+according to your connections.

samples/tone_melody/prj.conf

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+CONFIG_GPIO=y
+CONFIG_CPLUSPLUS=y
+CONFIG_ARDUINO_API=y

samples/tone_melody/src/main.cpp

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+/*
+  Melody
+
+  Plays a melody
+
+  circuit:
+  - 8 ohm speaker on digital pin 8
+
+  created 21 Jan 2010
+  modified 30 Aug 2011
+  by Tom Igoe
+
+  This example code is in the public domain.
+
+  https://docs.arduino.cc/built-in-examples/digital/toneMelody/
+*/
+
+#include "pitches.h"
+#include <Arduino.h>
+
+// notes in the melody:
+int melody[] = {
+  NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
+};
+
+// note durations: 4 = quarter note, 8 = eighth note, etc.:
+int noteDurations[] = {
+  4, 8, 8, 4, 4, 4, 4, 4
+};
+
+void setup() {
+  // iterate over the notes of the melody:
+  for (int thisNote = 0; thisNote < 8; thisNote++) {
+
+    // to calculate the note duration, take one second divided by the note type.
+    //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
+    int noteDuration = 1000 / noteDurations[thisNote];
+    tone(CONFIG_TONE_OUT_DIGITAL_PIN_NUMBER, melody[thisNote], noteDuration);
+
+    // to distinguish the notes, set a minimum time between them.
+    // the note's duration + 30% seems to work well:
+    int pauseBetweenNotes = noteDuration * 1.30;
+    delay(pauseBetweenNotes);
+    // stop the tone playing:
+    noTone(CONFIG_TONE_OUT_DIGITAL_PIN_NUMBER);
+  }
+}
+
+void loop() {
+  // no need to repeat the melody.
+}

samples/tone_melody/src/pitches.h

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+/*************************************************
+   Public Constants
+ *************************************************/
+
+#define NOTE_B0 31
+#define NOTE_C1 33
+#define NOTE_CS1 35
+#define NOTE_D1 37
+#define NOTE_DS1 39
+#define NOTE_E1 41
+#define NOTE_F1 44
+#define NOTE_FS1 46
+#define NOTE_G1 49
+#define NOTE_GS1 52
+#define NOTE_A1 55
+#define NOTE_AS1 58
+#define NOTE_B1 62
+#define NOTE_C2 65
+#define NOTE_CS2 69
+#define NOTE_D2 73
+#define NOTE_DS2 78
+#define NOTE_E2 82
+#define NOTE_F2 87
+#define NOTE_FS2 93
+#define NOTE_G2 98
+#define NOTE_GS2 104
+#define NOTE_A2 110
+#define NOTE_AS2 117
+#define NOTE_B2 123
+#define NOTE_C3 131
+#define NOTE_CS3 139
+#define NOTE_D3 147
+#define NOTE_DS3 156
+#define NOTE_E3 165
+#define NOTE_F3 175
+#define NOTE_FS3 185
+#define NOTE_G3 196
+#define NOTE_GS3 208
+#define NOTE_A3 220
+#define NOTE_AS3 233
+#define NOTE_B3 247
+#define NOTE_C4 262
+#define NOTE_CS4 277
+#define NOTE_D4 294
+#define NOTE_DS4 311
+#define NOTE_E4 330
+#define NOTE_F4 349
+#define NOTE_FS4 370
+#define NOTE_G4 392
+#define NOTE_GS4 415
+#define NOTE_A4 440
+#define NOTE_AS4 466
+#define NOTE_B4 494
+#define NOTE_C5 523
+#define NOTE_CS5 554
+#define NOTE_D5 587
+#define NOTE_DS5 622
+#define NOTE_E5 659
+#define NOTE_F5 698
+#define NOTE_FS5 740
+#define NOTE_G5 784
+#define NOTE_GS5 831
+#define NOTE_A5 880
+#define NOTE_AS5 932
+#define NOTE_B5 988
+#define NOTE_C6 1047
+#define NOTE_CS6 1109
+#define NOTE_D6 1175
+#define NOTE_DS6 1245
+#define NOTE_E6 1319
+#define NOTE_F6 1397
+#define NOTE_FS6 1480
+#define NOTE_G6 1568
+#define NOTE_GS6 1661
+#define NOTE_A6 1760
+#define NOTE_AS6 1865
+#define NOTE_B6 1976
+#define NOTE_C7 2093
+#define NOTE_CS7 2217
+#define NOTE_D7 2349
+#define NOTE_DS7 2489
+#define NOTE_E7 2637
+#define NOTE_F7 2794
+#define NOTE_FS7 2960
+#define NOTE_G7 3136
+#define NOTE_GS7 3322
+#define NOTE_A7 3520
+#define NOTE_AS7 3729
+#define NOTE_B7 3951
+#define NOTE_C8 4186
+#define NOTE_CS8 4435
+#define NOTE_D8 4699
+#define NOTE_DS8 4978