add support for struct_ops maps and programs #1348

Job	Run time
Build Documentation	17s
Build and Lint	2m 27s
Run tests on previous stable Go	1m 1s
Run tests on arm64	1m 3s
Run tests (mainline)	1m 15s
Run tests (stable)	1m 2s
Run tests (6.6)	1m 12s
Run tests (6.1)	1m 1s
Run tests (5.15)	1m 15s
Run tests (5.10)	1m 3s
Run tests (5.4)	1m 0s
Run tests (4.19)	1m 7s
Run tests (4.14)	1m 7s
Run tests (4.9)	1m 0s
	15m 50s

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