Merge pysim-otaman-server into otaman (monorepo, v1.7.0)

- Move PWA into frontend/; server package at pysim_otaman_server/
- Server now serves the PWA (same origin -> no CORS/PNA): static file handler
  + --web-dir flag + injects window.PYSIM_EMBEDDED marker into index.html
- Frontend defaults to relative API base when embedded (pysimBase = '')
- Version 1.7.0 aligned: server.py VERSION, pyproject.toml, PWA header
- SW cache bump otaman-v7 -> otaman-v8
- Docs: combined README + docs/api.md endpoint reference; update links
- Fix stale package.json repository URL

requirements-pysim.txt

@@ -0,0 +1,18 @@
+# pysim dependencies minus the SMPP bridge (smpp.twisted3). Used by setup.bat.
+# pySim-shell does not use SMPP; omitting smpp.twisted3 avoids the
+# twisted -> twisted-iocpsupport build chain on Windows.
+pyscard
+pyserial
+pytlv
+cmd2>=2.6.2,<4.0
+jsonpath-ng
+construct>=2.10.70
+bidict
+pyosmocom>=0.0.12
+pyyaml>=5.4
+termcolor
+colorlog
+pycryptodomex
+packaging
+smpp.pdu @ git+https://github.com/hologram-io/smpp.pdu
+asn1tools