feat(controller): support receiving `MultipartFile`s #8539

Job	Run time
Build Java and TypeScript for other tasks	2m 35s
Test Java	3m 31s
ITs (ubuntu-latest, group-1)	5m 12s
Check style	2m 40s
ITs (ubuntu-latest, group-2)	4m 43s
Gradle tests (ubuntu-latest)	2m 24s
ITs (ubuntu-latest, some)	4m 39s
Gradle tests (windows-latest)	4m 14s
Test TypeScript	2m 24s
Tests Summary	3s
	32m 25s

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