Rename server-start.* to start.*, add sniff-start.bat

- git mv server-start.sh -> start.sh, server-start.bat -> start.bat
- Add Windows sniff-start.bat mirroring sniff-start.sh options
- Update usage comments and PWA help text references
- Bump 1.22.17, SW cache v48->v49

start.bat

@@ -0,0 +1,54 @@
+@echo off
+setlocal enabledelayedexpansion
+
+:: simtrace2-pysniff-server startup script for Windows
+::
+:: Usage: start.bat [--capture gsmtap|direct] [--port PORT] [--db PATH] [--gsmtap-port PORT]
+::
+:: Options set via environment variables act as defaults; CLI flags override them.
+
+set "CAPTURE=%CAPTURE%"
+if "%CAPTURE%"=="" set "CAPTURE=gsmtap"
+set "PORT=%PORT%"
+if "%PORT%"=="" set "PORT=8081"
+set "DB=%DB%"
+set "GSMTAP_PORT=%GSMTAP_PORT%"
+if "%GSMTAP_PORT%"=="" set "GSMTAP_PORT=4729"
+set "EXTRA_ARGS="
+
+:parse_args
+if "%~1"=="" goto :run
+if "%~1"=="--capture" (
+    set "CAPTURE=%~2"
+    shift
+    shift
+    goto :parse_args
+)
+if "%~1"=="--port" (
+    set "PORT=%~2"
+    shift
+    shift
+    goto :parse_args
+)
+if "%~1"=="--db" (
+    set "DB=%~2"
+    shift
+    shift
+    goto :parse_args
+)
+if "%~1"=="--gsmtap-port" (
+    set "GSMTAP_PORT=%~2"
+    shift
+    shift
+    goto :parse_args
+)
+set "EXTRA_ARGS=!EXTRA_ARGS! %~1"
+shift
+goto :parse_args
+
+:run
+echo Starting simtrace2-pysniff-server...
+echo PWA (simtrace-analyser) will be served at http://127.0.0.1:%PORT%/
+
+set "PYTHONPATH=%~dp0"
+python -m simtrace2_pysniff.server --capture %CAPTURE% --port %PORT% --gsmtap-port %GSMTAP_PORT% %EXTRA_ARGS%