feat: add contribute view (#44)

### Explanation

Also throw a couple new game screenshots in

### Issue

_No response_

### Attestations

- [x] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [x] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
- [x] My pull request uses an appropriate title, matching the conventional commit standards.
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [x] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

_No response_

### Versioning

_No response_

Reviewed-on: https://codeberg.org/nhcarrigan/portfolio/pulls/44
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

test/app/api/contribute/route.spec.ts

@@ -0,0 +1,55 @@
+/**
+ * @copyright nhcarrigan
+ * @license Naomi's Public License
+ * @author Naomi Carrigan
+ */
+/* eslint-disable new-cap */
+import { NextResponse } from "next/server";
+import { describe, it, expect, vi } from "vitest";
+import { GET } from "../../../../src/app/api/contribute/route";
+import { getCodebergIssues } from "../../../../src/lib/codeberg";
+
+vi.mock("../../../../src/lib/codeberg");
+
+describe("gET /api/contribute", () => {
+  it("should return a sorted and limited list of activities", async() => {
+    expect.assertions(2);
+    const mockCodebergData = [
+      {
+        body:     "body1",
+        html_url: "https://codeberg.org/repo1/issue1",
+        labels:   [ { name: "label1" } ],
+        number:   1,
+        title:    "issue1",
+      },
+    ];
+
+    vi.mocked(getCodebergIssues).mockResolvedValue(mockCodebergData);
+
+    const response = await GET();
+    const json = await response.json();
+
+    expect(response, "did not respond with Next").toBeInstanceOf(NextResponse);
+    expect(json, "incorrect payload").toStrictEqual([
+      {
+        body:   "body1",
+        labels: [ "label1" ],
+        number: 1,
+        title:  "issue1",
+        url:    "https://codeberg.org/repo1/issue1",
+      },
+    ]);
+  });
+
+  it("should handle empty data from both sources", async() => {
+    expect.assertions(2);
+    vi.mocked(getCodebergIssues).mockResolvedValue([]);
+
+    const response = await GET();
+    const json = await response.json();
+
+    expect(response, "did not use Next to respond").
+      toBeInstanceOf(NextResponse);
+    expect(json, "was not empty array").toStrictEqual([]);
+  });
+});