feat(controller): support receiving `MultipartFile`s #8618

Job	Run time
Build Java and TypeScript for other tasks	2m 55s
Gradle tests (ubuntu-latest)	3m 48s
Check style	1m 55s
Gradle tests (windows-latest)	7m 27s
Test Java	3m 41s
ITs (ubuntu-latest, group-1)	5m 17s
ITs (ubuntu-latest, group-2)	4m 38s
Test TypeScript	2m 38s
ITs (ubuntu-latest, some)	4m 27s
Tests Summary	6s
	36m 52s

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