libwebsockets.h: clean out some boilerplate better put in core/private.h

lib/core/libwebsockets.c

lib/core/private.h

lib/event-libs/libuv/libuv.c

lib/libwebsockets.h

lib/misc/jws/jwk.c

lib/misc/jws/jws.c

lib/misc/lejp.c

lib/plat/esp32/esp32-helpers.c

lib/plat/windows/windows-file.c

lib/roles/cgi/cgi-server.c

lib/roles/h2/hpack.c

lib/roles/h2/minihuf.c

lib/roles/http/header.c

lib/roles/http/server/lejp-conf.c

lib/roles/http/server/lws-spa.c

lib/roles/http/server/parsers.c

lib/roles/http/server/server.c

lib/roles/ws/ext/extension-permessage-deflate.c

lib/tls/mbedtls/mbedtls-server.c

lwsws/main.c