Document link between import-outside-top-level (PLC0415) and lint.flake8-tidy-imports.banned-module-level-imports (#18733)

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## Summary

As mentioned in
https://github.com/astral-sh/ruff/issues/18728#issuecomment-2981330666
CC @ntBre


![image](https://github.com/user-attachments/assets/ac0e9ea6-6510-48be-b775-47b30bdf7efe)

![image](https://github.com/user-attachments/assets/2a69df6f-1973-4d81-8985-9e0ce70f8175)


## Test Plan

Run the docs locally as per
a2cd6df429/CONTRIBUTING.md (mkdocs)

---------

Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>

crates/ruff_linter/src/rules/pylint/rules/import_outside_top_level.rs

@@ -44,6 +44,13 @@ use crate::{
 ///     print(platform.python_version())
 /// ```
 ///
+/// ## See also
+/// This rule will ignore import statements configured in
+/// [`lint.flake8-tidy-imports.banned-module-level-imports`][banned-module-level-imports]
+/// if the rule [`banned-module-level-imports`][TID253] is enabled.
+///
+/// [banned-module-level-imports]: https://docs.astral.sh/ruff/settings/#lint_flake8-tidy-imports_banned-module-level-imports
+/// [TID253]: https://docs.astral.sh/ruff/rules/banned-module-level-imports/
 /// [PEP 8]: https://peps.python.org/pep-0008/#imports
 #[derive(ViolationMetadata)]
 pub(crate) struct ImportOutsideTopLevel;

crates/ruff_workspace/src/options.rs

@@ -1996,7 +1996,8 @@ pub struct Flake8TidyImportsOptions {
 
     /// List of specific modules that may not be imported at module level, and should instead be
     /// imported lazily (e.g., within a function definition, or an `if TYPE_CHECKING:`
-    /// block, or some other nested context).
+    /// block, or some other nested context). This also affects the rule `import-outside-top-level`
+    /// if `banned-module-level-imports` is enabled.
     #[option(
         default = r#"[]"#,
         value_type = r#"list[str]"#,

ruff.schema.json

@@ -1438,7 +1438,7 @@
           }
         },
         "banned-module-level-imports": {
-          "description": "List of specific modules that may not be imported at module level, and should instead be imported lazily (e.g., within a function definition, or an `if TYPE_CHECKING:` block, or some other nested context).",
+          "description": "List of specific modules that may not be imported at module level, and should instead be imported lazily (e.g., within a function definition, or an `if TYPE_CHECKING:` block, or some other nested context). This also affects the rule `import-outside-top-level` if `banned-module-level-imports` is enabled.",
           "type": [
             "array",
             "null"