build: subpackages implementation (#164)

* migrate to hatch

* reorder tests

* generic fixtures

* straight forward conftest

* fix docs generation

* fix tox environments

* reformat tomls

* cleanup pyproject

* some play with renaming

* move root conftest into pytest plugins

* fix setup script

* move fixtures to __init__.py

* remove duplicate fixtures

* disable pylint warning

* simplify configuration fixture

* remove empty conftest

* remove crap from local pyprojects

ahriman-web/package/lib/systemd/system/ahriman-web.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=ArcH linux ReposItory MANager web server
+After=network.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/ahriman web
+ExecReload=/usr/bin/ahriman web-reload
+User=ahriman
+Group=ahriman
+
+[Install]
+WantedBy=multi-user.target

ahriman-web/package/lib/systemd/system/ahriman-web@.service

@@ -0,0 +1 @@
+ahriman-web.service