add docs

src/core_codemods/docs/pixee_python_enable-jinja2-autoescape.md

@@ -0,0 +1,17 @@
+This codemod ensures you configure jinja2 to turn on autoescaping of HTML content. Unfortunately, the jinja2
+default behavior is to not autoescape when rendering templates, which makes your applications
+vulnerable to Cross-Site Scripting (XSS) attacks.
+
+Our codemod currently checks if you forgot to turn autoescape on or if you explicitly disabled it. The change looks as follows:
+
+```diff
+  from jinja2 import Environment
+
+- env = Environment()
+- env = Environment(autoescape=False, loader=some-loader)
++ env = Environment(autoescape=True)
++ env = Environment(autoescape=True, loader=some-loader)
+  ...
+```
+
+At this time, this codemod will not detect if `autoescape` is assigned to a callable.

tests/codemods/test_enable_jinja2_autoescape.py

@@ -1,5 +1,4 @@
-import pytest
-from codemodder.codemods.enable_jinja2_autoescape import EnableJinja2Autoescape
+from core_codemods.enable_jinja2_autoescape import EnableJinja2Autoescape
 from tests.codemods.base_codemod_test import BaseSemgrepCodemodTest