component/bt : add bt device api 1. add get bd_addr function later, will add other functions reference with bluetooth device. See merge request !380
ESP-IDF Blufi demo
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This is the demo for bluetooth config wifi connection to ap.
attentions:
1. Please use the BLEDEMO APK
2. As the GATTServer start a litte slowly, so Please Wait for a period, then use apk scan the apk util find a random address devices named Espressif_008
3. Just a unstable version..