Implement PyScript custom <script type> (#1548)

* updated MicroPython to latest in order to have `globals` API available
  * reduced code around helpers for both MicroPython and Pyodide as now these are more aligned
  * updated all dependencies and brought in latest [coincident/window](https://github.com/WebReflection/coincident#coincidentwindow) goodness to any `xworker`, preserving the `sync` previous behavior
  * using [@ungap/structured-clone/json](https://github.com/ungap/structured-clone#tojson) as *coincident* default `parse` and `stringify` utility to allow recursive and more complex data to travel back from the *Worker* (forward data is still fully [structured clone algorithm compatible](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm))
  * renamed all *plugin/s* references to *custom/s* as plugin as a word was too misleading
  * changed *custom types* helpers logic to allow any single node to have its own version of the interpreter wrapper, and all the extra fields it carries with it, including a way to augment every interpreter execution, among as every worker code execution
  * created a `custom` folder where I've landed the very first `pyscript.js` custom type
  * created an exhaustive test page to demonstrate the current abilities of *PyScript Next* among its ability to expose utilities that can be used to create *PyScript* plugins

pyscript.core/test/matplot.py

@@ -46,6 +46,26 @@ buf = io.BytesIO()
 plt.savefig(buf, format="png")
 buf.seek(0)
 
-js.xworker.postMessage(
-    "data:image/png;base64," + base64.b64encode(buf.read()).decode("UTF-8")
-)
+# how it was (including main thread counter part)
+# js.xworker.postMessage(
+#     "data:image/png;base64," + base64.b64encode(buf.read()).decode("UTF-8")
+# )
+
+# how it is now via structured coincident/window
+document = xworker.window.document
+img = document.createElement("img")
+img.style.transform = "scale(.5)"
+img.src = "data:image/png;base64," + base64.b64encode(buf.read()).decode("UTF-8")
+
+# document.body.append(img) fails for some reason I don't understand
+# same would be for document.querySelector("#image").append(img)
+# those would work in any JS counterpart though ... but for demo sake:
+document.querySelector("#image").innerHTML = img.outerHTML
+
+# about pyodide issue
+print(xworker.window.Array(1, 2))  # this works
+xworker.window.console.log(1, 2)  # this works too
+# xworker.window.console.log(xworker.window.Array(1, 2)) # this doesn't
+# xworker.window.console.log([1, 2]) # also this doesn't
+
+# xworker.window.console.log(to_js({})) # this doesn't neither