move to a more standard python packaging structure

pyproject.toml

@@ -35,27 +35,14 @@ maintainers = [
 [project.scripts]
 DAMARIS3 = "damaris.__main__:main"
 
-[tool.setuptools]
-packages = [
-    "damaris",
-    "damaris.data",
-    "damaris.experiments",
-    "damaris.gui",
-    "damaris.tools"
-]
-
-[tool.setuptools.package-dir]
-"damaris" = "src"
-"damaris.data" = "src/data"
-"damaris.experiments" = "src/experiments"
-"damaris.gui" = "src/gui"
-"damaris.tools" = "src/tools"
+[tool.setuptools.packages.find]
+where = ["src"]
 
 [tool.setuptools.package-data]
 "damaris.gui" = ["DAMARIS3.png", "DAMARIS3.ico", "damaris.xml", "python.xml"]
 
 [tool.setuptools.data-files]
-"share/python3-damaris/images" = ["src/gui/DAMARIS3.png", "src/gui/DAMARIS3.ico"]
+"share/python3-damaris/images" = ["src/damaris/gui/DAMARIS3.png", "src/damaris/gui/DAMARIS3.ico"]
 #"share/python3-damaris/doc" = ["doc/index.html"]
 #"share/python3-damaris/doc/reference-html" = ["doc/reference-html/*"]
 #"share/python3-damaris/doc/tutorial-html" = ["doc/tutorial-html/*"]