WhyLabsCallbackHandler updates (#7621)

Updates to the WhyLabsCallbackHandler and example notebook
- Update dependency to langkit 0.0.6 which defines new helper methods
for callback integrations
- Update WhyLabsCallbackHandler to use the new `get_callback_instance`
so that the callback is mostly defined in langkit
- Remove much of the implementation of the WhyLabsCallbackHandler here
in favor of the callback instance

This does not change the behavior of the whylabs callback handler
implementation but is a reorganization that moves some of the
implementation externally to our optional dependency package, and should
make future updates easier.

@agola11

docs/extras/ecosystem/integrations/whylabs_profiling.ipynb

@@ -1,6 +1,7 @@
 {
  "cells": [
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -16,6 +17,7 @@
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -28,10 +30,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "!pip install langkit -q"
+    "%pip install langkit openai langchain"
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -54,6 +57,7 @@
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {
     "tags": []
@@ -63,6 +67,7 @@
    ]
   },
   {
+   "attachments": {},
    "cell_type": "markdown",
    "metadata": {},
    "source": [
@@ -125,16 +130,7 @@
     "    ]\n",
     ")\n",
     "print(result)\n",
-    "# you don't need to call flush, this will occur periodically, but to demo let's not wait.\n",
-    "whylabs.flush()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
+    "# you don't need to call close to write profiles to WhyLabs, upload will occur periodically, but to demo let's not wait.\n",
     "whylabs.close()"
    ]
   }
@@ -155,7 +151,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.6"
+   "version": "3.8.10"
   },
   "vscode": {
    "interpreter": {