v1.58.0
cmake: update .gitignore files
integration: Enable http3 test with cmake
integration: Move serverTester http3 function to its own file
nghttpx: Refactor code to build cert_tree, add SNI test
integration: Fix lint errors
nghttpx: Stricter transfer-encoding checks
nghttpx: Change mruby script handling
integration: Add TLS key and certificate for testing
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