Bluetooth: Use Zephyr standard log system instead of bluetooth/common/log

The `bluetooth/common/log.h` and `bluetooth/common/log.c` files have been
removed. Files that were using them have been updated to use
`zephyr/logging/log.h` instead.

Those replacement have been done consequently:
- `/BT_DBG/LOG_DBG/`
- `/BT_ERR/LOG_ERR/`
- `/BT_WARN/LOG_WRN/`
- `/BT_INFO/LOG_INF/`
- `/BT_HEXDUMP_DBG/LOG_HEXDUMP_DBG/`
- `/BT_DBG_OBJ_ID/LOG_DBG_OBJ_ID/`

Also, some files were relying on the `common/log.h` include to include
`zephyr/bluetooth/hci.h`, in those cases the include of `hci.h` has
been added.

For files that were including `common/log.h` but not using any logs,
the include has been removed and not replaced.

Signed-off-by: Théo Battrel <theo.battrel@nordicsemi.no>

subsys/bluetooth/services/ots/Kconfig

@@ -79,11 +79,18 @@ if BT_OTS_CLIENT
 
 # TODO: Unify logging for OTS server and client - the client uses
 # "BT" debugging, the server does not.
+
 config BT_DEBUG_OTS_CLIENT
 	bool "Object Transfer Service Client debug"
+	select DEPRECATED
 	help
 	  Use this option to enable Object Transfer Client debug logs
 
+module = BT_OTS_CLIENT
+legacy-debug-sym = BT_DEBUG_OTS_CLIENT
+module-str = "Object Transfer Service Client"
+source "subsys/bluetooth/common/Kconfig.template.log_config_bt"
+
 endif # BT_OTS_CLIENT
 
 if BT_OTS || BT_OTS_CLIENT