fix: serve the eSIM GET endpoints from _do_GET; release v3.0.0

The three eSIM GET routes were inserted after the POST-only
/api/verify-adm branch, i.e. into the _do_POST chain, so GET
/api/esim/chip|profiles|notifications fell through to the 404 handler
(only POST /api/esim/profile was reachable).

- Moved /api/esim/chip|profiles|notifications into _do_GET (after
  /api/status); /api/esim/profile stays in _do_POST.
- Regression test: inspect the handler sources and assert each route is
  in the right chain.
- Version 3.0.0 (eSIM support is a major update): server/pyproject/PWA
  header, sw.js simple-v227.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-simple-server"
-version = "2.8.1"
+version = "3.0.0"
 description = "HTTP REST server wrapping pysim for the SIMple PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.