build(Makefile): replace old webpack-based frontend bundling with static bundling using esbuild

Makefile

@@ -42,7 +42,7 @@ help:
 .PHONY: clean
 # HELP: remove all compilation results in the directory but leave containers and images unharmed
 clean:
-	rm -rf node_modules .npm .cache assets/icons assets/favicons static well-known 
+	rm -rf node_modules .npm .cache assets/icons assets/favicons static 
 	rm -rf .stack .stack-work .stack-work-build .stack-work-run .stack-work-test .stack-work-doc
 	rm -rf bin/ .Dockerfile .dev-port-http .dev-port-https
 .PHONY: clean-all
@@ -115,11 +115,11 @@ test: test-frontend test-backend i18n-check
 %-frontend: FRADRIVE_SERVICE=frontend
 %-frontend: --image-build --containerized---%-frontend;
 
---%-frontend: --containerized---frontend-dependencies-frontend;
+--%-frontend: --containerized-static-frontend;
 
 # HELP(compile-frontend): compile frontend
---compile-frontend: --frontend-dependencies
-	npx -- webpack --progress $(WATCH)
+--compile-frontend: static
+	npm run build
 
 .PHONY: serve-frontend
 # HELP: serve frontend (watch file changes)
@@ -140,8 +140,6 @@ serve-frontend:
 	@echo Karma frontend tests are currently broken after npm update and have therefor been temporarily disabled.
 # npx -- karma start --conf karma.conf.cjs $(WATCH)
 
---frontend-dependencies: node_modules package.json package-lock.json assets;
-
 node_modules: package.json package-lock.json
 	npm ci --cache .npm --prefer-offline
 
@@ -155,8 +153,8 @@ assets/icons: node_modules
 	./utils/renamer.pl node_modules/@fortawesome/fontawesome-free/svgs/solid utils/rename-fa.json assets/icons/fradrive
 	./utils/renamer.pl node_modules/@fortawesome/fontawesome-free/svgs/regular utils/rename-fa.json assets/icons/fradrive
 
-well-known: node_modules assets
-	npx webpack --progress
+static: node_modules esbuild.config.mjs assets
+	npm run build
 
 ##### FRONTEND TARGETS #####
 ############################