Generate labels with pangocairo (#8)

Goal of this PR is to have some basic labels generated with pangocairo
- size of the canvas should be matching the input text and grow/shrink accordingly
- basic formatting options like fontsize and align should be working

Reviewed-on: moritz/ptouch-prnt#8

src/libusbwrap/UsbDevice.cpp

@@ -1,6 +1,6 @@
 /* 
     ptrnt - print labels on linux
-    Copyright (C) 2023  Moritz Martinius
+    Copyright (C) 2023-2024  Moritz Martinius
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -27,12 +27,12 @@
 #include "libusbwrap/interface/IUsbDevice.hpp"
 
 namespace libusbwrap {
-UsbDevice::UsbDevice(libusb_context* ctx, libusb_device* dev) : mLibusbCtx(ctx), mLibusbDev(dev) {
+UsbDevice::UsbDevice(libusb_context* ctx, usbDevice_ptr dev) : mLibusbCtx(ctx), mLibusbDev(std::move(dev)) {
     if (mLibusbCtx == nullptr || mLibusbDev == nullptr) {
         throw std::invalid_argument("ctx or device are nullptr");
     }
 
-    libusb_get_device_descriptor(dev, &mLibusbDevDesc);
+    libusb_get_device_descriptor(mLibusbDev.get(), &mLibusbDevDesc);
 }
 
 UsbDevice::~UsbDevice() {
@@ -44,7 +44,7 @@ UsbDevice::~UsbDevice() {
 }
 
 bool UsbDevice::open() {
-    int openStatus = libusb_open(mLibusbDev, &mLibusbDevHandle);
+    int openStatus = libusb_open(mLibusbDev.get(), &mLibusbDevHandle);
     if (openStatus != 0) {
         mLastError = static_cast<Error>(openStatus);
         return false;
@@ -90,13 +90,12 @@ bool UsbDevice::releaseInterface(int interfaceNo) {
     return true;
 }
 
-bool UsbDevice::bulkTransfer(uint8_t endpoint, std::vector<uint8_t>& data, int* tx,
-                             unsigned int timeout) {
+bool UsbDevice::bulkTransfer(uint8_t endpoint, const std::vector<uint8_t>& data, int* tx, unsigned int timeout) {
     // TODO: implement error handling for incomplete transactions (tx length != data length)
     int bulkTransferStatus = 0;
 
-    bulkTransferStatus =
-        libusb_bulk_transfer(mLibusbDevHandle, endpoint, data.data(), data.size(), tx, timeout);
+    bulkTransferStatus = libusb_bulk_transfer(mLibusbDevHandle, endpoint, const_cast<unsigned char*>(data.data()),
+                                              data.size(), tx, timeout);
     if (bulkTransferStatus != 0) {
         mLastError = static_cast<Error>(bulkTransferStatus);
         return false;
@@ -109,15 +108,15 @@ const usbId UsbDevice::getUsbId() {
 }
 
 const device::Speed UsbDevice::getSpeed() {
-    return static_cast<device::Speed>(libusb_get_device_speed(mLibusbDev));
+    return static_cast<device::Speed>(libusb_get_device_speed(mLibusbDev.get()));
 }
 
 const uint8_t UsbDevice::getBusNumber() {
-    return libusb_get_bus_number(mLibusbDev);
+    return libusb_get_bus_number(mLibusbDev.get());
 }
 
 const uint8_t UsbDevice::getPortNumber() {
-    return libusb_get_port_number(mLibusbDev);
+    return libusb_get_port_number(mLibusbDev.get());
 }
 
 const Error UsbDevice::getLastError() {