refactor: decrease compile time for golang plugins

This change refactors the compiled golang plugins into 3 distinct binaries:

- commands: already existing
- subcommands/subcommands: entrypoint into all subcommands
- triggers: entrypoint into all triggers

It then further symlinks triggers and subcommands to the built binaries. This results in both a much faster build process as well as smaller package size.

plugins/buildpacks/subcommands.go

@@ -3,6 +3,7 @@ package buildpacks
 import (
 	"errors"
 	"fmt"
+	"strings"
 
 	"github.com/dokku/dokku/plugins/common"
 )
@@ -115,6 +116,27 @@ func CommandRemove(args []string, index int) (err error) {
 	return
 }
 
+// CommandReport displays a buildpacks report for one or more apps
+func CommandReport(appName string, infoFlag string) {
+	if strings.HasPrefix(appName, "--") {
+		infoFlag = appName
+		appName = ""
+	}
+
+	if len(appName) == 0 {
+		apps, err := common.DokkuApps()
+		if err != nil {
+			return
+		}
+		for _, appName := range apps {
+			ReportSingleApp(appName, infoFlag)
+		}
+		return
+	}
+
+	ReportSingleApp(appName, infoFlag)
+}
+
 // CommandSet implements buildpacks:set
 func CommandSet(args []string, index int) (err error) {
 	var appName string