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

.vscode/c_cpp_properties.json

@@ -4,7 +4,7 @@
       "name": "Linux",
       "compilerPath": "/usr/bin/clang",
       "cStandard": "c11",
-      "cppStandard": "c++17",
+      "cppStandard": "c++20",
       "compileCommands": "${workspaceFolder}/builddir/compile_commands.json",
       "browse": {
         "path": ["${workspaceFolder}"]

.vscode/launch.json

@@ -10,9 +10,21 @@
       "request": "launch",
       "program": "${workspaceFolder}/builddir/ptprnt",
       "args": [
-        "-t Hello"
+        "-t i"
       ],
-      "cwd": "${fileDirname}",
+      "stopAtEntry": false,
+      "cwd": "${workspaceFolder}",
+      "environment": [],
+      "externalConsole": false,
+      "MIMode": "gdb",
+      "miDebuggerPath": "/usr/bin/gdb",
+      "setupCommands": [
+        {
+          "description": "Automatische Strukturierung und Einrückung für \"gdb\" aktivieren",
+          "text": "-enable-pretty-printing",
+          "ignoreFailures": true
+        }
+      ]
     }
   ]
 }

.vscode/settings.json

@@ -1,5 +1,8 @@
 {
-  "clangd.arguments": ["-background-index", "-compile-commands-dir=builddir/"],
+  "clangd.arguments": [
+    "-background-index",
+    "-compile-commands-dir=builddir/"
+  ],
   "editor.formatOnType": false,
   "editor.formatOnSave": true,
   "files.associations": {
@@ -83,8 +86,8 @@
     "charconv": "cpp",
     "*.ipp": "cpp"
   },
-  "clang-tidy.buildPath": "builddir/",
   "clangd.onConfigChanged": "restart",
-  "C_Cpp.default.compileCommands": "/home/moritz/src/ptouch-prnt/builddir/compile_commands.json",
-  "C_Cpp.default.configurationProvider": "mesonbuild.mesonbuild"
-}
+  "cSpell.words": [
+    "ptrnt"
+  ],
+}