Update. Add svelte admin frontend

Makefile

@@ -5,7 +5,7 @@ SVELTE_COMPONENTS = status
 
 SVELTE_TARGETS = $(addprefix $(FRONTEND)/public/build/,$(addsuffix .ts, $(SVELTE_COMPONENTS)))
 
-.PHONY: $(TARGET)
+.PHONY: $(TARGET) clean
 .NOTPARALLEL:
 
 $(TARGET): $(SVELTE_TARGETS)
@@ -15,3 +15,6 @@ $(TARGET): $(SVELTE_TARGETS)
 $(SVELTE_TARGETS): $(SVELTE_SRC)
 	$(info ===>  BUILD frontend)
 	cd $(FRONTEND) && npm install && npm run build
+
+clean:
+	@rm -rf tmp