(test) Added basic test script

This is just to quickly prove out that things are still working. This
requires an environment variable to be configured to communicate with
AppVeyor.  To start with, all it does is list the projects and
environments, and attempts to clear the cache of a project.

Author: gep13

test.cake

@@ -0,0 +1,78 @@
+#reference "BuildArtifacts/temp/_PublishedLibraries/Cake.AppVeyor/net6.0/Cake.AppVeyor.dll"
+#addin nuget:?package=Refit&version=4.6.58
+#addin nuget:?package=Newtonsoft.Json&version=11.0.2
+
+public class BuildData
+{
+    public string AppVeyorApiToken { get; set; }
+    public string AccountName { get; set; }
+    public string ProjectSlug { get; set; }
+
+    public BuildData()
+    {
+        AccountName = "GaryEwanPark";
+        ProjectSlug = "resharperreports";
+    }
+}
+
+Setup<BuildData>(setupContext => {
+    return new BuildData() 
+    {
+        AppVeyorApiToken = EnvironmentVariable<string>("APPVEYOR_API_TOKEN", "")
+    };
+});
+
+Task("Default")
+    .IsDependentOn("Get-Projects")
+    .IsDependentOn("Get-Environments")
+    .IsDependentOn("Clear-Cache");
+
+Task("Get-Projects")
+    .Does<BuildData>((data) =>
+{
+    if (string.IsNullOrEmpty(data.AppVeyorApiToken))
+    {
+        Error("Unable to find AppVeyor API Token");
+        return;
+    }
+
+    Information("Found the following projects:");
+
+    foreach(var project in AppVeyorProjects(data.AppVeyorApiToken))
+    {
+        Information("Name: {0}, Repository: {1}, Slug: {2}", project.Name, project.RepositoryName, project.Slug);
+    }
+});
+
+Task("Get-Environments")
+    .Does<BuildData>((data) =>
+{
+    if (string.IsNullOrEmpty(data.AppVeyorApiToken))
+    {
+        Error("Unable to find AppVeyor API Token");
+        return;
+    }
+
+    Information("Found the following environments:");
+
+    foreach(var environment in AppVeyorEnvironments(data.AppVeyorApiToken))
+    {
+        Information("Name: {0}, Provider: {1}", environment.Name, environment.Provider);
+    }
+});
+
+Task("Clear-Cache")
+    .Does<BuildData>((data) =>
+{
+    if (string.IsNullOrEmpty(data.AppVeyorApiToken))
+    {
+        Error("Unable to find AppVeyor API Token");
+        return;
+    }
+
+    Information("Clearing Project Cache...");
+
+    AppVeyorClearCache(data.AppVeyorApiToken, data.AccountName, data.ProjectSlug);
+});
+
+RunTarget("Default");