MINOR: quic: add config parse source file

Create a new dedicated source file for QUIC related options parsing on
the bind line.
diff --git a/Makefile b/Makefile
index 58c740a..0bf04f4 100644
--- a/Makefile
+++ b/Makefile
@@ -596,7 +596,7 @@
 OPTIONS_OBJS += src/quic_sock.o src/proto_quic.o src/xprt_quic.o src/quic_tls.o \
                 src/quic_frame.o src/quic_cc.o src/quic_cc_newreno.o src/mux_quic.o \
                 src/cbuf.o src/qpack-dec.o src/qpack-tbl.o src/h3.o src/qpack-enc.o \
-                src/hq_interop.o
+                src/hq_interop.o src/cfgparse-quic.o
 endif
 
 ifneq ($(USE_LUA),)