Added initial Melody Playback Ability

Now, controlled via MQTT a Playback of a melody can Start, Stop, Pause 
etc. 

Settings like speed, total duration, pauses etc can be set.

build/build.options.json

@@ -0,0 +1,9 @@
+{
+  "additionalFiles": "..\\..\\..,..\\..,..\\..,..\\..,..\\..,..\\..,..\\..,..\\..,..\\..",
+  "compiler.optimization_flags": "-Os",
+  "customBuildProperties": "build.warn_data_percentage=75",
+  "fqbn": "esp32:esp32:esp32:UploadSpeed=921600,CPUFreq=240,FlashFreq=80,FlashMode=qio,FlashSize=4M,PartitionScheme=default,DebugLevel=none,PSRAM=disabled,LoopCore=1,EventsCore=1,EraseFlash=none,JTAGAdapter=default,ZigbeeMode=default",
+  "hardwareFolders": "C:\\Users\\espi_\\AppData\\Local\\Arduino15\\packages",
+  "otherLibrariesFolders": "C:\\Users\\espi_\\Documents\\Arduino\\libraries",
+  "sketchLocation": "C:\\Users\\espi_\\Documents\\Arduino\\vesper"
+}