tests: add dummy plugin for daemon unit tests

The TestSuite plugin contains audio, video and chat handlers to
support toggling/untoogling tests.

GitLab: https://git.jami.net/savoirfairelinux/jami-daemon/-/issues/745

Change-Id: I45f55127443a5c904b89066b6fe1ca102d37e361
diff --git a/TestSuite/data/preferences.json b/TestSuite/data/preferences.json
new file mode 100644
index 0000000..d6a496d
--- /dev/null
+++ b/TestSuite/data/preferences.json
@@ -0,0 +1,9 @@
+[
+    {
+        "type": "EditText",
+        "key": "textGlobalPreference",
+        "title": "{{text_translatable1}}",
+        "summary": "{{summary_translatable1}}",
+        "defaultValue": "{{default_translatable1}}"
+    }
+]
\ No newline at end of file