Use prettier instead xo (#455)

* migrate from xo to prettier + eslint

* migrate VSCode settings from XO to Prettier for code formatting

Author: Fishbakh-N

.vscode/settings.json

@@ -1,22 +1,20 @@
 {
   "editor.formatOnSave": true,
-  "xo.enable": true,
-  "xo.format.enable": true,
 
   "typescript.tsdk": "node_modules/typescript/lib",
   "typescript.preferences.importModuleSpecifier": "non-relative",
 
   // formatting
   "[typescript]": {
-    "editor.defaultFormatter": "samverschueren.linter-xo"
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
   "[typescriptreact]": {
-    "editor.defaultFormatter": "samverschueren.linter-xo"
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
   "[javascript]": {
-    "editor.defaultFormatter": "samverschueren.linter-xo"
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
   },
   "[javascriptreact]": {
-    "editor.defaultFormatter": "samverschueren.linter-xo"
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
   }
 }