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/applets/png-analyser/png-analyser.mjs

@@ -0,0 +1,27 @@
+
+import {initCore} from "../../js/nibblepoker-core.mjs"
+import {parsePngFile} from "../../libs/png-utils.mjs";
+
+{
+    initCore();
+
+    const toolId = "png-analyser";
+
+    const eFileInput = document.getElementById(`${toolId}-test-input`);
+
+    window.onload = function () {
+
+		eFileInput.addEventListener('change', function(e) {
+            let files = e.target.files;
+
+            console.log(files);
+
+            parsePngFile(files[0]).then(pngFile => {
+                console.log(pngFile);
+
+                console.log(pngFile.getImageHeaderChunk().getWidth());
+                console.log(pngFile.getImageHeaderChunk().getHeight());
+            });
+        });
+    };
+}