Fix session name label language switch + add frontend screenshot

- Store raw session name in STATE.currentSessionRawName
- Re-render session-name-display in toggleLang() with current translation
- Add frontend.png screenshot to README
- Bump 1.22.15, SW cache v46->v47

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.backends._legacy:_Backend"
 
 [project]
 name = "simtrace2-pysniff"
-version = "1.22.14"
+version = "1.22.15"
 description = "Python-based sniffing tool for SIMtrace2 hardware (SIM card communication sniffer)"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {text = "GPL-2.0-or-later"}