router multi pair swap return type

[psorinionut]

No description provided.

[github-actions]

Contract comparison - from 452cfb0 to a59a6f4

Path	size	has-allocator	has-format
mx-exchange-sc
- pause-all/pause-all.wasm	5452	No	No
mx-exchange-sc/dex
- farm/farm.wasm	38737	No	No
- farm-with-locked-rewards/farm-with-locked-rewards.wasm	38370	No	No
- governance/governance.wasm	17305	No	No
- pair
- - pair.wasm	31227	No	No
- - pair-full.wasm	32682	No	No
- - safe-price-view.wasm	7862	No	No
- pair-mock/pair-mock.wasm	5474	No	No
- price-discovery/price-discovery.wasm	16384	No	No
- proxy-deployer/proxy-deployer.wasm	4477	No	No
- router/router.wasm	26617 ➡️ 26868 🔴	No	No
mx-exchange-sc/energy-integration
- energy-factory-mock/energy-factory-mock.wasm	4233	No	No
- energy-update/energy-update.wasm	1520	No	No
- fees-collector/fees-collector.wasm	18557	No	No
- governance-v2/governance-v2.wasm	16867	No	No
mx-exchange-sc/farm-staking
- farm-staking/farm-staking.wasm	42862	No	No
- farm-staking-proxy/farm-staking-proxy.wasm	19403	No	No
- metabonding-staking/metabonding-staking.wasm	10158	No	No
mx-exchange-sc/locked-asset
- distribution/distribution.wasm	14379	No	No
- energy-factory/energy-factory.wasm	35393	No	No
- factory/factory.wasm	30399	No	No
- lkmex-transfer/lkmex-transfer.wasm	11235	No	No
- locked-token-wrapper/locked-token-wrapper.wasm	14425	No	No
- proxy_dex/proxy_dex.wasm	36899	No	No
- simple-lock/simple-lock.wasm	24592	No	No
- simple-lock-whitelist/simple-lock-whitelist.wasm	26239	No	No
- token-unstake/token-unstake.wasm	14251	No	No