squash again all the commit.
component/bt: Change all the gattc API && bta gattc layer.
component/bt: Debug the code and change the btc_ble_gattc_get_db method.
component/bt: Change the gatt read API interface.
component/bt: Reconstruction the BTA_gattc_cache code.
component/bt: Change back the bluedroid_get_status to marco.
component/bt: Added the serch service res start_handle & end_handle to the result.
component/bt: Change the gattc docs format.
component/bt: Change the docs format.
component/bt: fix the read char value bug.
component/bt: change the gattc_get_attr_count method.
component/bt: Change back the bta_gattc write ccc code.
component/bt: Change the gattc api docs format
component/bt: Change the gattc API docs.
component/bt: Change the prepare write descriptor method to avoid the exection.
Component/bt: modify gatt clinet demo with new API
component/bt: Change the p_src_data->read.p_value to avoid exection.
compoent/bt: Change the bugfix of gattc unreg for the notify.
Modify gattc security demo
component/bt: Change the log error.
Component/bt: modify gattc_multi_connect demo
componnet/bt: Change the bta_gattc_cache sdp include.
component/bt: Change the start_handle & end_handle not from the service.
component/bt: Change the gattc API docs.
component/bt: Change the return issues.
component/bt: Fixed the include service bug.
component/bt: Modify gattc_multi_connect demo , add scan log
component/bt: Fixed the BTA_GATTC_GetIncludeService start handle & end handle error bug.
component/bt: Fix the invalid handle of the get all char issues.
component/bt: Fix the bug with get_db_size_with_type of the start handle & end_handle not correted issue.
component/bt: Fixed the get secondly service num not correct issue.
component/bt: Fixed the last service handle not correted issue.
1. Remove the bond_device global variable.
2. Fix bond_device add cause memory exception
3. Modify the code location.
4. modify thread security
5. remove esp_ble_clear_bond_device_list() API
6. modify esp_ble_get_gond_device_list() to return list immediately, rather than wait event.
7. modify the gatt_security_server demo to show how to remove all the bonded devices.
8. fix some code bugs may cause something error.
component/bt: cherry-pick the bugfix/btdm_api_manage_pair_info_#13119 to this branch.
component/bt: Change the ble gap API code format & added the status judgment in the btc_storage_load_bonded_ble_devices function.
NVS is used to store PHY calibration data, WiFi configuration, and BT
configuration. Previously BT examples did not call nvs_flash_init,
relying on the fact that it is called during PHY init. However PHY init
did not handle possible NVS initialization errors.
This change moves PHY init procedure into the application, and adds
diagnostic messages to BT config management routines if NVS is not
initialized.
