Add Settings window to Agent UI

Agent systray UI has been extended with
a setting window that allows configuring 
management URL, admin URL and 
supports pre-shared key.
While for the Netbird managed version 
the Settings are not necessary, it helps
to properly configure the self-hosted version.

Makefile

@@ -1,42 +0,0 @@
-PACKAGE_NAME          := github.com/wiretrustee/wiretrustee/
-GOLANG_CROSS_VERSION  ?= v1.17.6
-
-SYSROOT_DIR     ?= sysroots
-SYSROOT_ARCHIVE ?= sysroots.tar.bz2
-
-.PHONY: sysroot-pack
-sysroot-pack:
-	@tar cf - $(SYSROOT_DIR) -P | pv -s $[$(du -sk $(SYSROOT_DIR) | awk '{print $1}') * 1024] | pbzip2 > $(SYSROOT_ARCHIVE)
-
-.PHONY: sysroot-unpack
-sysroot-unpack:
-	@pv $(SYSROOT_ARCHIVE) | pbzip2 -cd | tar -xf -
-
-.PHONY: release-dry-run
-release-dry-run:
-	@docker run \
-		--rm \
-		--privileged \
-		-e CGO_ENABLED=1 \
-		-v /var/run/docker.sock:/var/run/docker.sock \
-		-v `pwd`:/go/src/$(PACKAGE_NAME) \
-		-w /go/src/$(PACKAGE_NAME) \
-		goreleaser/goreleaser-cross:${GOLANG_CROSS_VERSION} \
-		--rm-dist --skip-validate --skip-publish
-
-.PHONY: release
-release:
-	@if [ ! -f ".release-env" ]; then \
-		echo "\033[91m.release-env is required for release\033[0m";\
-		exit 1;\
-	fi
-	docker run \
-		--rm \
-		--privileged \
-		-e CGO_ENABLED=1 \
-		--env-file .release-env \
-		-v /var/run/docker.sock:/var/run/docker.sock \
-		-v `pwd`:/go/src/$(PACKAGE_NAME) \
-		-w /go/src/$(PACKAGE_NAME) \
-		goreleaser/goreleaser-cross:${GOLANG_CROSS_VERSION} \
-		release --rm-dist