feat(controller): support receiving `MultipartFile`s #8613

Job	Run time
Build Java and TypeScript for other tasks	2m 30s
Check style	2m 20s
Test Java	3m 58s
ITs (ubuntu-latest, group-1)	5m 29s
Gradle tests (ubuntu-latest)	3m 58s
ITs (ubuntu-latest, group-2)	4m 54s
Gradle tests (windows-latest)	6m 41s
Test TypeScript	2m 29s
ITs (ubuntu-latest, some)	4m 44s
Tests Summary	2s
	37m 5s

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