[BREAKING] - Refactor NimBLEAdvertising

* General code cleanup.
* `NimBLEAdvertisementData` moved to it's own .h and .cpp files.
* Added new method, `NimBLEAdvertising::setPreferredParams` that takes the min and max preferred connection parameters as an alternative for `setMinPreferred` and `setMaxPreferred`.
* Added new method, `NimBLEAdvertising::setAdvertisingInterval` Sets the advertisement interval for min and max to the same value instead of calling `setMinInterval` and `setMaxInterval` separately if there is not value difference.
* `NimBLEAdvertisementData` payload is now stored in `std::vector<uint8_t>` instead of `std::string`.
* `NimBLEAdvertisementData::getPayload` now returns `std::vector<uint8_t>` instead of `std::string`.
* `NimBLEAdvertisementData::addData` now takes either a `std::vector<uint8_t>` or `uint8_t* + length` instead of `std::string` or `char + length`.
* `NimBLEAdvertisementData::setName` now takes an optional `bool` parameter to indicate if the name is complete or incomplete, default = complete.
* `NimBLEAdvertising::start` No longer takes a callback pointer parameter, instead the new method `NimBLEAdvertising::setAdvertisingCompleteCallback` should be used.
* `NimBLEAdvertising::setAdvertisementType` has been renamed to `NimBLEAdvertising::setConnectableMode` to better reflect it's function.
* `NimBLEAdvertising::setScanResponse` has been renamed to `NimBLEAdvertising::enableScanResponse` to better reflect it's function.
* Scan response is no longer enabled by default.
* Added new method, `NimBLEAdvertising::setDiscoverableMode` to allow applications to control the discoverability of the advertiser.
* Advertising the name and TX power of the device will no longer happen by default and should be set manually by the application.
* Added overload for `NimBLEAdvertising::setManufacturerData` that takes a `const uint8_t*` and , size_t` paramter.
* Added overload for `NimBLEAdvertising::setServiceData` that takes `const NimBLEUUID& uuid`, ` const uint8_t* data`, ` size_t length` as parameters.
* Added overload for `NimBLEAdvertising::setServiceData` that takes `const NimBLEUUID& uuid`, `const std::vector<uint8_t>&` as parameters.
* All `NimBLEAdvertisementData` functions that change data values now return `bool`, true = success.
* All `NimBLEAdvertising` functions that change data values now return `bool`, true = success.
* `NimBLEAdvertising::setMinPreferred` and `NimBLEAdvertising::setMaxPreferred` have been removed, use `NimBLEAdvertising::setPreferredParams` instead.
* All advertising data is now stored in instances of `NimBLEAdvertisingData` and vectors removed from `NimBLEAdvertising`.
* `NimBLEAdvertising::setAdvertisementData` and `NimBLEAdvertising::setScanResponseData` now return `bool`, true = success.
* Added new method, `NimBLEAdvertisementData::removeData`, which takes a parameter `uint8_t type`, the data type to remove.
* Added new method, `NimBLEAdvertisementData::toString`, which will print the data in hex.
* Added new method, `NimBLEAdvertising::getAdvertisementData`, which returns a reference to the currently set advertisement data.
* Added new method, `NimBLEAdvertising::getScanData`, which returns a reference to the currently set scan response data.
* Added overloads for `NimBLEAdvertising::removeServiceUUID` and `NimBLEAdvertisementData::removeServiceUUID` to accept a `const char*`
* Added new method, `NimBLEAdvertising::clearData`, which will clear the advertisement and scan response data.

examples/basic/BLE_server/main/main.cpp

@@ -31,13 +31,13 @@ void app_main(void) {
   BLEService *pService = pServer->createService(SERVICE_UUID);
   BLECharacteristic *pCharacteristic = pService->createCharacteristic(
                                         CHARACTERISTIC_UUID,
-                                  /***** Enum Type NIMBLE_PROPERTY now *****      
+                                  /***** Enum Type NIMBLE_PROPERTY now *****
                                         BLECharacteristic::PROPERTY_READ   |
-                                        BLECharacteristic::PROPERTY_WRITE  
+                                        BLECharacteristic::PROPERTY_WRITE
                                         );
                                   *****************************************/
                                         NIMBLE_PROPERTY::READ |
-                                        NIMBLE_PROPERTY::WRITE 
+                                        NIMBLE_PROPERTY::WRITE
                                        );
 
   pCharacteristic->setValue("Hello World says Neil");
@@ -45,13 +45,13 @@ void app_main(void) {
   // BLEAdvertising *pAdvertising = pServer->getAdvertising();  // this still is working for backward compatibility
   BLEAdvertising *pAdvertising = BLEDevice::getAdvertising();
   pAdvertising->addServiceUUID(SERVICE_UUID);
-  pAdvertising->setScanResponse(true);
-  
+  pAdvertising->enableScanResponse(true);
+
   /** These methods have been removed **
   pAdvertising->setMinPreferred(0x06);  // functions that help with iPhone connections issue
   pAdvertising->setMinPreferred(0x12);
   */
-  
+
   BLEDevice::startAdvertising();
   printf("Characteristic defined! Now you can read it in your phone!\n");
 }