Add a note about an open issue with code generation and SourceKit-LSP (#642)

Following the discussion on Slack, this adds a note for users of
SourceKit-LSP informing them that the default code generation might not
work as expected and offers a possible workaround.


https://swift-open-source.slack.com/archives/C02PV8T5HQD/p1726815970093299

Only updates documentation. Let me know if you feel this is the right
place for this information?

Author: t089

README.md

@@ -109,6 +109,9 @@ platforms, listed below.
 | Generator plugin and CLI            | ✅ 10.15+ | ✅    | ✖️      | ✖️      | ✖️       | ✖️        |
 | Generated code and runtime library  | ✅ 10.15+ | ✅    | ✅ 13+ | ✅ 13+ | ✅ 6+   | ✅ 1+    |
 
+> [!NOTE]
+> When using Visual Studio Code or other editors that rely on [SourceKit-LSP](https://github.com/swiftlang/sourcekit-lsp), the editor may not correctly recognize generated code within the same module. As a workaround, consider creating a separate target for code generation and then importing it into your main module. For more details, see the discussion in [swiftlang/sourcekit-lsp#665](https://github.com/swiftlang/sourcekit-lsp/issues/665#issuecomment-2093169169).
+
 ## Documentation and example projects
 
 To get started, check out the [documentation][docs-generator], which contains

Sources/swift-openapi-generator/Documentation.docc/Swift-OpenAPI-Generator.md

@@ -107,6 +107,8 @@ The generated code, runtime library, and transports are supported on more platfo
 | Generator plugin and CLI            | ✅ 10.15+ | ✅    | ✖️      | ✖️      | ✖️       | ✖️        |
 | Generated code and runtime library  | ✅ 10.15+ | ✅    | ✅ 13+ | ✅ 13+ | ✅ 6+   | ✅ 1+    |
 
+> Note: When using Visual Studio Code or other editors that rely on [SourceKit-LSP](https://github.com/swiftlang/sourcekit-lsp), the editor may not correctly recognize generated code within the same module. As a workaround, consider creating a separate target for code generation and then importing it into your main module. For more details, see the discussion in [swiftlang/sourcekit-lsp#665](https://github.com/swiftlang/sourcekit-lsp/issues/665#issuecomment-2093169169).
+
 ### Documentation and example projects
 
 To get started, check out the topics below, or one of the <doc:Swift-OpenAPI-Generator> tutorials.