chore(docs): notebook convert script + 1 conversion (#3390)

* Adds a conversion script from ipython notebook to markdown.
* Replaces one ipython notebook (create react agent) with a markdown file for testing.

---------

Co-authored-by: Ben Burns <803016+benjamincburns@users.noreply.github.com>

docs/_scripts/notebook_convert_templates/md_executable/conf.json

@@ -0,0 +1,5 @@
+{
+  "mimetypes": {
+    "text/markdown": true
+  }
+}

docs/_scripts/notebook_convert_templates/md_executable/index.md.j2

@@ -0,0 +1,36 @@
+{#https://github.com/rdbisme/nbconvert/blob/master/share/jupyter/nbconvert/templates/markdown/index.md.j2#}
+{% extends 'markdown/index.md.j2' %}
+
+{% block input %}
+```
+{%- if 'magics_language' in cell.metadata  -%}
+    {{ cell.metadata.magics_language}}
+{%- elif 'name' in nb.metadata.get('language_info', {}) -%}
+    {{ nb.metadata.language_info.name }} exec="on" source="above" session="1"
+{%- endif %}
+{{ cell.source}}
+```
+{% endblock input %}
+
+{%- block traceback_line -%}
+{%- endblock traceback_line -%}
+
+{%- block stream -%}
+{%- endblock stream -%}
+
+{%- block data_text scoped -%}
+{%- endblock data_text -%}
+
+{%- block data_html scoped -%}
+```html
+{{ output.data['text/html'] | safe }} 
+```
+{%- endblock data_html -%}
+
+{%- block data_jpg scoped -%}
+![](data:image/jpg;base64,{{ output.data['image/jpeg'] }})
+{%- endblock data_jpg -%}
+
+{%- block data_png scoped -%}
+![](data:image/png;base64,{{ output.data['image/png'] }})
+{%- endblock data_png -%}