QUIC: added "quic" listen parameter.

The parameter allows processing HTTP/0.9-2 over QUIC.

Also, introduced ngx_http_quic_module and moved QUIC settings there

auto/modules

@@ -404,12 +404,9 @@ if [ $HTTP = YES ]; then
     ngx_module_type=HTTP
 
     if [ $HTTP_V3 = YES ]; then
-        USE_OPENSSL=YES
-        USE_OPENSSL_QUIC=YES
         have=NGX_HTTP_V3 . auto/have
         have=NGX_HTTP_HEADERS . auto/have
-
-        HTTP_SSL=YES
+        HTTP_QUIC=YES
 
         # XXX for Huffman
         HTTP_V2=YES
@@ -696,6 +693,21 @@ if [ $HTTP = YES ]; then
         . auto/module
     fi
 
+    if [ $HTTP_QUIC = YES ]; then
+        USE_OPENSSL_QUIC=YES
+        have=NGX_HTTP_QUIC . auto/have
+        HTTP_SSL=YES
+
+        ngx_module_name=ngx_http_quic_module
+        ngx_module_incs=
+        ngx_module_deps=src/http/modules/ngx_http_quic_module.h
+        ngx_module_srcs=src/http/modules/ngx_http_quic_module.c
+        ngx_module_libs=
+        ngx_module_link=$HTTP_QUIC
+
+        . auto/module
+    fi
+
     if [ $HTTP_SSL = YES ]; then
         USE_OPENSSL=YES
         have=NGX_HTTP_SSL . auto/have