build: switch from yarn to npm to manage js dependencies and move js contents to root

yarn v1 is being deprecated and starts to have some issues

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

src/utils/listFormat.ts

@@ -0,0 +1,23 @@
+const shortConjunctionFormatter = new Intl.ListFormat(undefined, {
+  style: "short",
+  type: "conjunction",
+});
+
+const shortDisjunctionFormatter = new Intl.ListFormat(undefined, {
+  style: "short",
+  type: "disjunction",
+});
+
+const listFormatAvailable = typeof Intl?.ListFormat === "function";
+
+export const listShortConjunctionFormatter = (list: Array<string>): string => {
+  return listFormatAvailable
+    ? shortConjunctionFormatter.format(list)
+    : list.join(",");
+};
+
+export const listShortDisjunctionFormatter = (list: Array<string>): string => {
+  return listFormatAvailable
+    ? shortDisjunctionFormatter.format(list)
+    : list.join(",");
+};