discover: Handle and track plugin_options

Track plugin_options in the device_handler. Plugins can be added with
device_handler_add_plugin_option() and accessed via
device_handler_get_plugin().
Extend discover_server to support the new 'add' and 'remove' pb-protocol
actions and advertise new plugins to connecting clients.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/test/parser/user-event.c b/test/parser/user-event.c
new file mode 100644
index 0000000..43d15b7
--- /dev/null
+++ b/test/parser/user-event.c
@@ -0,0 +1,13 @@
+
+#include <assert.h>
+
+#include <types/types.h>
+
+struct device_handler;
+
+void device_handler_add_plugin_option(struct device_handler *handler,
+		struct plugin_option *opt)
+{
+	(void)handler;
+	(void)opt;
+}