use mget instead of single get on getStates for alias ids

[foxriver76]

this could improve the performance lack reported in #1512. If it still persists we need to dig deeper than the low hanging fruits.

Performing getStates 100 times over 10,000 alias states, leads to the following changes:

Results previous to this change:
JSONL:

{"getStatesMultiAlias":{"timeMean":1713.29,"timeStd":0,"cpuMean":50.85,"cpuStd":17.85,"memMean":127.34,"memStd":7.05,"controllerCpuMean":51.68,"controllerCpuStd":14.52,"controllerMemMean":199.58,"controllerMemStd":5.78,"eventLoopLagMean":1.31,"eventLoopLagStd":8.13,"actionsPerSecondMean":0.06,"actionsPerSecondStd":0,"epochs":1,"iterations":100,"statesDbType":"jsonl","objectsDbType":"jsonl"}}

REDIS:

{"getStatesMultiAlias":{"timeMean":889.78,"timeStd":0,"cpuMean":75.18,"cpuStd":16.16,"memMean":138.9,"memStd":15.99,"controllerCpuMean":1.01,"controllerCpuStd":5.63,"controllerMemMean":92.38,"controllerMemStd":0.96,"eventLoopLagMean":1.85,"eventLoopLagStd":11.68,"actionsPerSecondMean":0.11,"actionsPerSecondStd":0,"epochs":1,"iterations":100,"statesDbType":"redis","objectsDbType":"redis"}}

after change:
JSONL:

{"getStatesMultiAlias":{"timeMean":97.45,"timeStd":0,"cpuMean":40.87,"cpuStd":44.53,"memMean":181.1,"memStd":18.94,"controllerCpuMean":83.54,"controllerCpuStd":41.67,"controllerMemMean":307.36,"controllerMemStd":44.34,"eventLoopLagMean":15.62,"eventLoopLagStd":32.48,"actionsPerSecondMean":1.03,"actionsPerSecondStd":0,"epochs":1,"iterations":100,"statesDbType":"jsonl","objectsDbType":"jsonl"}}

REDIS:

{"getStatesMultiAlias":{"timeMean":39.63,"timeStd":0,"cpuMean":117.97,"cpuStd":37.06,"memMean":187.17,"memStd":21.89,"controllerCpuMean":1.05,"controllerCpuStd":4.07,"controllerMemMean":70.86,"controllerMemStd":0.35,"eventLoopLagMean":52.49,"eventLoopLagStd":42.38,"actionsPerSecondMean":2.52,"actionsPerSecondStd":0,"epochs":1,"iterations":100,"statesDbType":"redis","objectsDbType":"redis"}}

[Apollon77]

wow ...JSONL 17times as fast, Redis 23times