[core] remove libev fdevent option (ignore)

lighttpd directly uses native OS event handlers

[ci] add cmake-asan build type

[multiple] remove long-deprecated modules

x-ref:
https://wiki.lighttpd.net/Docs_ConfigurationOptions#Deprecated

[build] CI builds now use make -j 2

[build] CI builds now use pcre2 (upgrade pcre)

pcre2 is current. pcre is no longer maintained.

build] scripts/ci-build.sh remove --with-maxminddb

remove --with-maxminddb;
maxminddb libs not currently part of our FreeBSD build images

[build] scripts/ci-build.sh add --with-maxminddb

[build] scripts/ci-build.sh adjustments

remove --with-mbedtls; mbedlts not currently part of our FreeBSD bld img

[build] scripts/ci-build.sh adjustments

remove --with-nss; nss libs not currently part of our FreeBSD build img
remove with_zstd=yes from SCons build, due to dependency on libpthread

[build] scripts/ci-build.sh w/o --with-wolfssl

WolfSSL is not generally available in *BSD due to WolfSSL limitations.
(Might be revisited with the Dec 2020 release of WolfSSL 4.6.0)

[build] scripts/ci-build.sh --with-nettle

[build] update scripts/ci-build.sh

* remove use of deprecated or obsolete packages on Linux, *BSD builds
--with-attr --with-fam --with-geoip
* add zstd
--with-zstd
* add multiple TLS options to

[build] update scripts/ci-build.sh

* remove use of deprecated or obsolete packages on Linux, *BSD builds
--with-attr --with-fam --with-geoip
* add zstd
--with-zstd
* add multiple TLS options to build
--with-gnutls --with-mbedtls --with-nss --with-openssl --with-wolfssl
(leave one TLS option (openssl) for SCons static build)

show more ...

[build] add --with-brotli to CI build

(thx stbuehler)

move ci-build.sh to scripts