Add full support for TLS certificate compression

This commit adds:
* Support for configuring the TLS certificate compression algorithms the
client is willing to receive via the CURLOPT_SSL_CERT_COMPRESSION option or
the '--cert-compression' command line flag.
* Support for decompressing zlib-compressed certificates in addition to
brotli.

Previously brotli decompression only was available and it was hardcoded
into the binary.

chrome/curl_edge98

@@ -22,4 +22,5 @@ dir=`echo "$0" | sed 's%/[^/]*$%%'`
     -H 'Accept-Language: en-US,en;q=0.9' \
     --http2 --false-start --compressed \
     --tlsv1.2 --no-npn --alps \
+    --cert-compression brotli \
     $@