Added a basic Easy-test

tests/test_02_easy_get_public_timeline.cpp

@@ -0,0 +1,27 @@
+/*  This file is part of mastodon-cpp.
+ */
+
+#include <iostream>
+#include <cstdint>
+#include "mastodon-cpp.hpp"
+#include "easy/easy.hpp"
+#include "easy/status.hpp"
+
+int main(int argc, char *argv[])
+{
+    Mastodon::Easy test("botsin.space", "");
+    std::string answer;
+    std::uint16_t ret = test.get(Mastodon::API::v1::timelines_public,
+                                 { { "limit", { "1" } } }, answer);
+    if (ret == 0)
+    {
+        Mastodon::Easy::Status status(answer);
+        if (status.valid())
+        {
+            return 0;
+        }
+    }
+
+    std::cout << ret << ": " << answer << '\n';
+    return 1;
+}