Bootstrap python tests (#697)

* move current integration tests to the integration folder

* move pyscript.py into its own python folder

* change the path for python unit testing files

* change pyscript.py path

* Update Makefile

* remove echo

* replace conda run with pytest directly

* oops, add python test files I embarrassingly forgot to add

Co-authored-by: Peter W <34256109+pww217@users.noreply.github.com>

pyscriptjs/tests/integration/test_py_button.py

@@ -0,0 +1,34 @@
+import pytest
+
+from .support import PyScriptTest
+
+
+class TestPyButton(PyScriptTest):
+    @pytest.mark.xfail
+    def test_on_click(self):
+        """
+        currently this test fails for a bad reason which is unrelated to
+        py-button. During the page loading, the following JS exception occur,
+        in base.ts:BaseEvalElement.evaluate
+
+        [JS exception   ] TypeError: Cannot use 'in' operator to search for 'runPythonAsync' in undefined
+            at http://127.0.0.1:8080/build/pyscript.js:305:38
+            at Object.subscribe (http://127.0.0.1:8080/build/pyscript.js:46:13)
+            at PyButton.runAfterRuntimeInitialized (http://127.0.0.1:8080/build/pyscript.js:304:27)
+            at PyButton.connectedCallback (http://127.0.0.1:8080/build/pyscript.js:26856:18)
+            at http://127.0.0.1:8080/build/pyscript.js:27075:20
+            at http://127.0.0.1:8080/build/pyscript.js:27093:3
+        """  # noqa: E501
+        self.pyscript_run(
+            """
+            <py-button label="my button">
+                import js
+                def on_click(evt):
+                    js.console.info('clicked!')
+            </py-button>
+        """
+        )
+        assert self.console.info.lines == []
+        self.page.locator("text=my button").click()
+        self.page.locator("text=my button").click()
+        assert self.console.info.lines == ["clicked!", "clicked!"]