Initial ideas list for 2025, just to give it a place to live

We'll add more ideas later, we just need to cleanup the ideas we have in the brainstorm document.

Change-Id: I286e5f2b077366830b63e6248fb0bc5dd465c9a0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/406843
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Jonas Jensen <jonasfj@google.com>

docs/gsoc/Dart-GSoC-2025-Project-Ideas.md

@@ -0,0 +1,77 @@
+> [!warning]
+> **Google Summer of Code 2025 is not accepting applications yet**.
+
+------
+
+A list of Google Summer of Code project ideas for Dart.
+
+For GSoC related discussions please use the [dart-gsoc group](https://groups.google.com/forum/#!forum/dart-gsoc).
+
+**Potential mentors**
+ * Jonas Jensen ([jonasfj](https://github.com/jonasfj)) `jonasfj@google.com`
+ * Daco Harkes ([dcharkes](https://github.com/dcharkes)) `dacoharkes@google.com`
+ * Hossein Yousefi ([HosseinYousefi](https://github.com/HosseinYousefi)) `yousefi@google.com`
+ * Liam Appelbe ([liamappelbe](https://github.com/liamappelbe)) `liama@google.com`
+ * More to come!
+
+## Project Application Process
+All projects assume familiarity with Dart (and sometimes Flutter). Aspiring applicants are encouraged to [learn Dart](https://dart.dev/guides/language/language-tour) and try to write some code.
+
+Applicants are welcome to find and fix bugs in [Dart](https://github.com/dart-lang/sdk) or some of the [packages written by the Dart team](https://pub.dev/publishers/dart.dev/packages). However, getting reviews can take a long time as code owners may be busy working on new features. So instead of requiring applicants to fix a _good first bug_, we
+suggest that applicants write a working code sample relevant for the proposed project.
+
+The code sample can be attached to the application as a [**secret** gist](https://gist.github.com/) (please use _secret gists_, and do not share these with other applicants). Suggested ideas below includes proposed "Good Sample Projects".
+
+**Do not spend too much energy on this piece of sample code**, we just want to see
+that you can code something relevant -- and that this sample code can run and do something non-trivial. Be aware that we have a limited number of
+mentors available, and will only be able to accept a few applicants.
+
+Applications can be submitted through the [summerofcode.withgoogle.com](https://summerofcode.withgoogle.com/) website. Applicants are encouraged to submit draft proposals, linking to Google Docs with permission for mentors to comment. See also the [contributor guide](https://google.github.io/gsocguides/student/writing-a-proposal) on writing a proposal.
+
+**IMPORTANT**: Remember to submit _final proposals_ before [the April 2nd deadline](https://developers.google.com/open-source/gsoc/timeline).
+
+## **Idea:** Exception testing for `package:webcrypto`
+
+ - **Possible Mentor(s)**: `jonasfj@google.com`,
+ - **Difficulty**: Hard
+ - **Project size**: Large (350 hours)
+ - **Skills**: Dart, FFI, JS
+
+**Description**: `package:webcrypto` ([github.com/google/webcrypto.dart](https://github.com/google/webcrypto.dart)) is a cross-platform implementation of the [Web Cryptography API](https://www.w3.org/TR/WebCryptoAPI/).
+It is important that it behaves the same way whether it's running on Windows, Linux, Mac, Android, iOS, Chrome, Firefox, or Safari. Towards that end, it has a lot of test cases. We could and should probably make more test cases.
+But we should also test that it throws the types of exceptions when given incorrect parameters. This probably needs a small test framework to ensure good test coverage.
+
+We expect a proposal for this project to include:
+ * A sample showing how to test exceptions for `RsaPssPrivateKey.generateKey`.
+   Ideally, the sample project includes parts of a generalized framework for testing exceptions.
+ * An outline of what kind of exceptions should be tested?
+ * A design for extending `TestRunner`, or creating a new framework, to test exceptions thrown by all methods.
+   * Illustrative code for how test cases would be configured
+   * Pros and cons of the design (especially when multiple choices are available)
+ * Timeline for the project
+
+**Good Sample Project**:
+Write a test cases that tests the different kinds of errors and exceptions that can be thrown by `RsaPssPrivateKey.generateKey`, run the tests across desktop, Chrome and Firefox. Consider extending the tests to cover all members of `RsaPssPrivateKey`.
+Try to generalize these test cases to avoid repetitive code, see the existing [TestRunner](https://github.com/google/webcrypto.dart/blob/5e6d20f820531d2b7b05935c1d78f38a036035e8/lib/src/testing/utils/testrunner.dart#L227) for inspiration.
+
+
+**Expected outcome**: PRs that land in `package:webcrypto` and increases our confidence in correctness cross-platforms.
+
+## TODO: More ideas as they come!
+
+# Template:
+
+Copy this template.
+
+## **Idea:** ...
+
+ - **Possible Mentor(s)**:
+ - **Difficulty**: Easy / Hard
+ - **Project size**: Small (90) / Medium (175 hours) / Large (350 hours)
+ - **Skills**: ...
+
+**Description**: ...
+
+**Good Sample Project**: ...
+
+**Expected outcome**: ...