fix: allow matrix testing without EOL versions (#299)

* fix: remove versions dependent on EOL composer 1

* Restore composer 1 versions

* Add `usable` version type, filtered by code constraints

* Added code comment

* Rebuilt index.js with latest changes merged

* Updated documentation

supported-version/src/kind/get-usable.spec.ts

@@ -0,0 +1,42 @@
+import { getUsableVersions } from "./get-usable";
+import { Project } from "../project/projects";
+import { getIndividualVersionsForProject } from "../versions/get-versions-for-project";
+
+// Mock the dependencies
+jest.mock('../versions/get-versions-for-project');
+const mockGetVersions = getIndividualVersionsForProject as jest.Mock;
+
+describe('getUsableVersions for magento-open-source', () => {
+    const project: Project = "magento-open-source";
+
+    beforeEach(() => {
+        mockGetVersions.mockReset();
+    });
+
+    it('should return an array of versions', () => {
+        mockGetVersions.mockReturnValue({
+            'magento/project-community-edition:2.4.6': { composer: '2.2.0' }
+        });
+        expect(Array.isArray(getUsableVersions(project))).toBe(true);
+    });
+
+    it('should filter out versions with composer < 2.0.0', () => {
+        mockGetVersions.mockReturnValue({
+            'magento/project-community-edition:2.4.5': { composer: '1.9.0' },
+            'magento/project-community-edition:2.4.6': { composer: '2.2.0' }
+        });
+        
+        const versions = getUsableVersions(project);
+        expect(versions).not.toContain('magento/project-community-edition:2.4.5');
+        expect(versions).toContain('magento/project-community-edition:2.4.6');
+    });
+
+    it('should handle composer version equal to 2.0.0', () => {
+        mockGetVersions.mockReturnValue({
+            'magento/project-community-edition:2.4.6': { composer: '2.0.0' }
+        });
+        
+        const versions = getUsableVersions(project);
+        expect(versions).toContain('magento/project-community-edition:2.4.6');
+    });
+});