Added validate function to PgConfig and invoked it in finalize and pool initialization #3334

Job	Run time
Build aarch64-apple-darwin	4m 9s
Build and test docker images	14m 37s
Build debian-x86_64	3m 41s
Build x86_64-apple-darwin	9m 33s
Lint and Unit test	52s
Build x86_64-pc-windows-msvc	8m 54s
Build x86_64-unknown-linux-gnu	6m 47s
Test on macos-13	2m 50s
Test on windows-latest	1m 31s
Test on ubuntu-latest	1m 5s
Test AWS Lambda	20s
Test postgis:11-3.0-alpine sslmode=disable	4m 46s
Test postgis:14-3.3-alpine sslmode=disable	4m 48s
Test postgis:15-3.3 sslmode=require	4m 51s
Package	0s
CI Finished	0s
	1h 8m 44s

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