Makefile: Add 'install' and 'uninstall' targets

I install to /usr/local by default, but this can be overridden by
setting PREFIX when running `make`

Signed-off-by: Anna Schumaker <anna@nowheycreamery.com>

Makefile

@@ -1,5 +1,9 @@
 # Copyright 2023 (c) Anna Schumaker.
 
+export PREFIX = /usr/local
+export XFSTESTSDB_BIN = ${PREFIX}/bin
+export XFSTESTSDB_LIB = ${PREFIX}/lib/xfstestsdb
+
 clean:
 	find . -type d -name __pycache__ -exec rm -r {} \+
 
@@ -7,9 +11,22 @@ clean:
 flake8:
 	flake8
 
+.PHONY: install
+install:
+	find ./xfstestsdb -type f -not -path "*/__pycache__/*" \
+		-exec install -v -C -D -m 755 "{}" "$(XFSTESTSDB_LIB)/{}" \;
+	install -C -v -m 644 xfstestsdb.py $(XFSTESTSDB_LIB)/xfstestsdb.py
+	echo -e "#!/bin/bash\npython -O $(XFSTESTSDB_LIB)/xfstestsdb.py \$$*" > $(XFSTESTSDB_BIN)/xfstestsdb
+	chmod 655 $(XFSTESTSDB_BIN)/xfstestsdb
+
 .PHONY: pytest
 pytest:
 	pytest
 
 .PHONY: tests
 tests: pytest flake8
+
+.PHONY: uninstall
+uninstall:
+	rm -v $(XFSTESTSDB_BIN)/xfstestsdb
+	rm -rv $(XFSTESTSDB_LIB)