Add tile statistics to mbtiles #2256

Job	Run time
Lint and Unit test	3m 2s
Build aarch64-apple-darwin	3m 18s
Build and test docker images	4m 34s
Build debian-x86_64	9m 32s
Build x86_64-apple-darwin	2m 46s
Build x86_64-pc-windows-msvc	3m 42s
Build x86_64-unknown-linux-gnu	2m 12s
Test postgis:11-3.0-alpine sslmode=disable	6m 0s
Test on macOS-latest	5m 11s
Test postgis:14-3.3-alpine sslmode=disable	3m 31s
Test on windows-latest	2m 23s
Test postgis:15-3.3 sslmode=require	3m 37s
Test on ubuntu-latest	57s
Package	58s
CI Finished	1s
	51m 44s

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