Reorder package to src-layout.

Move package to src directory and update project base files for build
process.

Makefile

@@ -0,0 +1,43 @@
+SHELL        := bash
+MAKEFLAGS     = --no-print-directory --no-builtin-rules
+.DEFAULT_GOAL = all
+
+# Variables
+PACKAGE = revpimodio2
+
+# If virtualenv exists, use it. If not, use PATH to find, except python3
+SYSTEM_PYTHON  = /usr/bin/python3
+PYTHON         = $(or $(wildcard venv/bin/python), $(SYSTEM_PYTHON))
+
+all: build
+
+.PHONY: all
+
+## Environment
+venv:
+	$(SYSTEM_PYTHON) -m venv venv
+	source venv/bin/activate && \
+		python3 -m pip install --upgrade pip && \
+		python3 -m pip install -r requirements.txt
+	exit 0
+
+.PHONY: venv
+
+## Build, install
+build:
+	$(PYTHON) -m setup sdist
+	$(PYTHON) -m setup bdist_wheel
+
+install:
+	$(PYTHON) -m pip install dist/$(PACKAGE)-*.whl
+
+.PHONY: build install
+
+## Clean
+clean:
+	rm -rf build dist src/*.egg-info *.spec
+
+clean-all: clean
+	rm -R venv
+
+.PHONY: clean clean-all