Prepare new plugin - wallet_bridge_api for wallet_api
Removed almost all condenser_api elements from wallet_api. Only legacy_asset left because methods from condenser_api::legacy_asset: to_string() and from_string() are needed. But legacy_asset is used only for reading arguments from cli_wallet and to print asset values and in other cases wallet_api uses protocol::asset.
Prepared wallet_bridge_api_plugin. This plugin has all methods with wallet_api needed for now to work. Removed remote_node_api. Now we use wallet_bridge_api.
TODO: Only smoke tests have been done in order to verify works + CI tests. Need to prepare tests to verify all wallet_api methods.