Re-enabled stubs for PNG analyser and ICO maker, Implemented Data utils, file utils and PNG parser, Still testing

Update png-analyser.yml, png-chunk-analyser.yml, and 17 more files...

static/resources/NibblePoker/libs/file-utils.mjs

@@ -0,0 +1,28 @@
+
+/**
+ * Reads a file and returns its content as a string.
+ * @param {File} file - The file to read.
+ * @returns {Promise<string>} A promise that resolves with the file content as a string.
+ */
+export function loadFileAsText(file) {
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = () => resolve(reader.result);
+        reader.onerror = reject;
+        reader.readAsText(file);
+    });
+}
+
+/**
+ * Reads a file and returns its content as a `Uint8Array`.
+ * @param {File} file - The file to read.
+ * @returns {Promise<Uint8Array>} A promise that resolves with the file content as a byte buffer.
+ */
+export function loadFileAsUint8Array(file) {
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = () => resolve(new Uint8Array(reader.result));
+        reader.onerror = reject;
+        reader.readAsArrayBuffer(file);
+    });
+}