added basic plugin structure

pkg/register/plugin_api.go

@@ -0,0 +1,19 @@
+package register
+
+import (
+	"net/rpc"
+
+	"github.com/hashicorp/go-plugin"
+)
+
+type PluginAPI struct {
+	Impl Plugin
+}
+
+func (pa *PluginAPI) Server(*plugin.MuxBroker) (any, error) {
+	return &PluginServer{Impl: pa.Impl}, nil
+}
+
+func (*PluginAPI) Client(b *plugin.MuxBroker, c *rpc.Client) (any, error) {
+	return &PluginClient{client: c}, nil
+}