Set stream name and program info for test tone broadcasts, update test tone WAV files

src/auracast/server/multicast_frontend.py

@@ -1521,10 +1521,16 @@ if start_stream:
             cfg_cls, lang = lang_cfgs[i % len(lang_cfgs)]
             if demo_content == "1 kHz test tone":
                 source_file = f'../testdata/test_tone_1k_{int(q["rate"]/1000)}kHz_mono.wav'
+                stream_name = 'test tone'
+                stream_program_info = '1khz'
             else:
                 source_file = f'../testdata/wave_particle_5min_{lang}_{int(q["rate"]/1000)}kHz_mono.wav'
+                stream_name = None
+                stream_program_info = None
             bigs1.append(cfg_cls(
                 code=(stream_passwort.strip() or None),
+                name=stream_name,
+                program_info=stream_program_info,
                 audio_source=f'file:{source_file}',
                 iso_que_len=32,
                 sampling_frequency=q['rate'],