fix: add new backend tools to basestruct test (#6925)

## 📝 Summary

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#123).
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This adds new tests backend tools to the basestruct test which checks if
any variables in the args or output are using BaseStruct instead of
msgspec.Struct (which is not pydantic compatible and will throw a type
error)

## 🔍 Description of Changes

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## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [ ] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [ ] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: bjoaquinc

tests/_utils/test_msgspec_basestruct.py

@@ -3,6 +3,8 @@
 import msgspec
 
 from marimo._ai._tools.tools.cells import (
+    GetCellOutputArgs,
+    GetCellOutputOutput,
     GetCellRuntimeDataArgs,
     GetCellRuntimeDataOutput,
     GetLightweightCellMapArgs,
@@ -16,6 +18,10 @@
     GetNotebookErrorsArgs,
     GetNotebookErrorsOutput,
 )
+from marimo._ai._tools.tools.lint import (
+    LintNotebookArgs,
+    LintNotebookOutput,
+)
 from marimo._ai._tools.tools.notebooks import (
     GetActiveNotebooksOutput,
 )
@@ -36,6 +42,10 @@
     GetNotebookErrorsArgs,
     GetNotebookErrorsOutput,
     GetActiveNotebooksOutput,
+    LintNotebookArgs,
+    LintNotebookOutput,
+    GetCellOutputArgs,
+    GetCellOutputOutput,
 ]