build: add directory-oriented make workflows

firmware/tools/sitl/Makefile

@@ -0,0 +1,34 @@
+override SHELL := /bin/sh
+override MAKEFLAGS += --no-print-directory
+
+.DEFAULT_GOAL := help
+.DELETE_ON_ERROR:
+
+override PYTHON := python3
+
+override PRIMARY_GOAL := $(firstword $(MAKECMDGOALS))
+
+run: ## Run kaptan-sim with the remaining command-line arguments
+	@exec python3 ../../../scripts/make-argv.py exec run ./kaptan-sim
+
+ifeq ($(PRIMARY_GOAL),run)
+
+.PHONY: run
+
+.DEFAULT:
+	@:
+
+else
+
+.PHONY: help run _check
+
+help: ## Show simulation commands
+	@printf '%s\n' 'Simulation' '' \
+		'Application arguments are passed through the root Makefile:' \
+		'  make firmware/tools/sitl -- move 5 3 1 --wait'
+
+_check:
+	$(PYTHON) world-structure-test.py
+	$(PYTHON) -m unittest test_kaptan_sim.py
+
+endif