add encoding=UTF8 pragma, refactoring #2042

Job	Run time
Build aarch64-apple-darwin	11m 9s
Build debian-x86_64	1m 57s
Build x86_64-apple-darwin	3m 15s
Build x86_64-pc-windows-msvc	6m 38s
Build x86_64-unknown-linux-gnu	9m 34s
Build and test docker images	6m 35s
Lint and Unit test	2m 20s
Test on macOS-latest	4m 19s
Test postgis:11-3.0-alpine sslmode=disable	3m 56s
Test on windows-latest	2m 1s
Test postgis:14-3.3-alpine sslmode=disable	4m 41s
Test on ubuntu-latest	46s
Test postgis:15-3.3 sslmode=require	4m 0s
Package aarch64-apple-darwin	9s
Package debian-x86_64	4s
Package x86_64-apple-darwin	11s
Package x86_64-pc-windows-msvc	19s
Package x86_64-unknown-linux-gnu	6s
Package aarch64-unknown-linux-musl	6s
Package x86_64-unknown-linux-musl	11s
CI Finished	2s
	1h 2m 19s

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