[framework] Cache image config

[henzigo]

Q	A
Description, reason for the PR	Image config is loading from file and parsed on every request. This PR just micro-optimized it and saves parsed image config into cache. Parsing took about 2ms on every request. Now it takes only 0.2ms. I used Symfony magic to get the correct cache pool
New feature	No
BC breaks	No
Fixes issues	...
Have you read and signed our License Agreement for contributions?	Yes

[sonarqubecloud[bot]]

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