Plugin system: allow plugins to provide custom routes

  - each route will be prefixed by `/plugin/<plugin_name>`
  - add a new template for plugins rendering
  - add a live example in the demo_plugin

Check out the "Plugin System" documentation for more detail.

Related to #143

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/plugins/test_route_invalid/test_route_invalid.php b/tests/plugins/test_route_invalid/test_route_invalid.php
new file mode 100644
index 00000000..0c5a5101
--- /dev/null
+++ b/tests/plugins/test_route_invalid/test_route_invalid.php
@@ -0,0 +1,12 @@
+<?php
+
+function test_route_invalid_register_routes(): array
+{
+    return [
+        [
+            'method' => 'GET',
+            'route' => 'not a route',
+            'callable' => 'getFunction',
+        ],
+    ];
+}