sqlite: add diagnostic channel #4218

Job	Run time
Build slim tarball	1m 59s
x86_64-darwin: with shared libraries	33m 1s
aarch64-darwin: with shared libraries	20m 24s
aarch64-linux: with shared libraries	17m 48s
x86_64-linux: with shared libraries	21m 22s
	1h 34m 34s

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