esp_ble_gattc_cache_assoc() function

- ESP_OK: Success - ESP_FAIL: Failure

1. This API is primarily used when the client has a stored server-side database (`assoc_addr`) and needs to connect to another device (`src_addr`) with the same attribute database. By invoking this API, the stored database is utilized as the peer server database, eliminating the need for attribute database search and discovery. This reduces processing time and accelerates the connection process. 2. The attribute table of a device with `assoc_addr` must be stored in the local GATTC cache first. Then, the attribute table of the device with `src_addr` must be the same as the one with `assoc_addr`. 3. This function triggers `ESP_GATTC_SET_ASSOC_EVT`.