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/config/Makefile

@@ -1,28 +1,5 @@
-include ../../common.mk
-
-GO_ARGS ?= -a
-
 SUBCOMMANDS = subcommands/export subcommands/get subcommands/set subcommands/unset subcommands/keys subcommands/bundle
+BUILD = commands subcommands
+PLUGIN_NAME = config
 
-build-in-docker: clean
-	docker run --rm \
-		-v $$PWD/../..:$(GO_REPO_ROOT) \
-		-w $(GO_REPO_ROOT)/plugins/config \
-		$(BUILD_IMAGE) \
-		bash -c "GO_ARGS='$(GO_ARGS)' make -j4 build" || exit $$?
-
-build: commands subcommands
-
-commands: **/**/commands.go
-	go build $(GO_ARGS) -o commands src/commands/commands.go
-
-subcommands: $(SUBCOMMANDS)
-
-subcommands/%: src/subcommands/*/%.go
-	go build $(GO_ARGS) -o $@ $<
-
-clean:
-	rm -rf commands subcommands
-
-src-clean:
-	rm -rf .gitignore src triggers vendor Makefile *.go glide.*
+include ../../common.mk