Implement new Project Card archiving (#1842)

* add Archived to ProjectCard response
add Archived to ProjectCardUpdate
update integration tests

* Add ProjectCardRequest model and update GetAll calls to use it
Update unit tests
Update integration tests

* skip_branch_with_pr still ends up building the branch on the initial push, so let's only build master instead

Octokit.Tests/Models/ProjectCardRequestTests.cs

@@ -0,0 +1,28 @@
+using Octokit;
+using Xunit;
+
+public class ProjectCardRequestTests
+{
+    public class TheToParametersDictionaryMethod
+    {
+        [Fact]
+        public void ContainsSetValues()
+        {
+            var request = new ProjectCardRequest(ProjectCardArchivedStateFilter.All);
+
+            var parameters = request.ToParametersDictionary();
+
+            Assert.Equal("all", parameters["archived_state"]);
+        }
+
+        [Fact]
+        public void ReturnsDefaultValuesForDefaultRequest()
+        {
+            var request = new ProjectCardRequest();
+
+            var parameters = request.ToParametersDictionary();
+
+            Assert.Empty(parameters);
+        }
+    }
+}