feat(controller): support receiving `MultipartFile`s #8616

Job	Run time
Build Java and TypeScript for other tasks	3m 3s
Gradle tests (ubuntu-latest)	3m 49s
Test Java	3m 34s
Gradle tests (windows-latest)	8m 52s
ITs (ubuntu-latest, group-1)	5m 13s
Check style	2m 14s
ITs (ubuntu-latest, group-2)	4m 43s
ITs (ubuntu-latest, some)	5m 14s
Test TypeScript	2m 44s
Tests Summary	5s
	39m 31s

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