add subiquity-server to snap

setup.py

@@ -115,6 +115,7 @@ setup(name='subiquity',
       ],
       entry_points={
           'console_scripts': [
+              'subiquity-server = subiquity.cmd.server:main',
               'subiquity-tui = subiquity.cmd.tui:main',
               'console-conf-tui = console_conf.cmd.tui:main',
               ('console-conf-write-login-details = '

snapcraft.yaml

@@ -20,6 +20,12 @@ apps:
     command: usr/bin/console-conf
   probert:
     command: bin/probert
+  subiquity-server:
+    command: usr/bin/subiquity-server
+    daemon: simple
+    restart-condition: always
+    environment:
+      PYTHONIOENCODING: utf-8
   subiquity-service:
     command: usr/bin/subiquity-service
     daemon: simple
@@ -87,6 +93,7 @@ parts:
       - attrs
       - pyyaml
       - systemd-python
+      - aiohttp
       #- urwid
     source: .
     source-type: git
@@ -95,6 +102,7 @@ parts:
       'bin/subiquity-tui': usr/bin/subiquity
       'bin/subiquity-loadkeys': usr/bin/subiquity-loadkeys
       'bin/subiquity-service': usr/bin/subiquity-service
+      'bin/subiquity-server': usr/bin/subiquity-server
       'bin/subiquity-configure-apt': usr/bin/subiquity-configure-apt
       'bin/subiquity-configure-run': usr/bin/subiquity-configure-run
   users-and-groups: