Add typos check action and config. #3701

Job	Run time
cmake-offline-googletest	4m 24s
cmake-offline-googletest-src	4m 14s
system-sexpp, sexpp shared libs on, rnp shared libs on	2m 50s
package-source	30s
ubuntu-latest [CC gcc; botan; shared libs on; GnuPG stable]	4m 27s
system-sexpp, sexpp shared libs on, rnp shared libs off	2m 53s
system-sexpp, sexpp shared libs off, rnp shared libs on	3m 21s
ubuntu-latest [CC clang; botan; shared libs on; GnuPG stable]	3m 59s
system-sexpp, sexpp shared libs off, rnp shared libs off	3m 33s
ubuntu-latest [CC gcc; openssl; shared libs on; GnuPG stable]	3m 53s
ubuntu-latest [CC clang; openssl; shared libs on; GnuPG stable]	3m 48s
ubuntu-20.04 [CC gcc; openssl; shared libs on; GnuPG stable]	3m 51s
ubuntu-latest [CC gcc; botan; shared libs off; GnuPG stable]	4m 1s
package	1m 5s
debian-tests	8s
	46m 57s

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