feat(01-01): boot hello app and dispatch greeter:hello

- Add party plugin registry with Register-before-Boot activation
- Add backpack, compass, bonfire, and pact capability interfaces
- Add examples/hello with two compiled plugin modules

examples/hello/main.go

@@ -0,0 +1,43 @@
+// Code generated by summer build. DO NOT EDIT.
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"git.golem15.com/golem15/summercms/backpack"
+	"git.golem15.com/golem15/summercms/bonfire"
+	"git.golem15.com/golem15/summercms/compass"
+	"git.golem15.com/golem15/summercms/pact"
+	"git.golem15.com/golem15/summercms/party"
+)
+
+func main() {
+	if err := run(os.Args[1:], os.Stdout); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}
+
+func run(args []string, out io.Writer) error {
+	cfg, err := compass.Load("config")
+	if err != nil {
+		return err
+	}
+	app := backpack.New(cfg)
+	plugins, err := party.Activate(app, PluginIDs)
+	if err != nil {
+		return err
+	}
+	var commands []bonfire.Command
+	for _, plugin := range plugins {
+		if hasCommands, ok := plugin.(pact.HasCommands); ok {
+			commands = append(commands, hasCommands.Commands()...)
+		}
+	}
+	root := bonfire.NewRoot("hello", commands, out)
+	root.SetArgs(args)
+	return root.Execute()
+}