[DNSAPI][DNSRSLVR] Parse the hosts file when the resolver is initializing

- Move the hosts file handling from dnsapi.dll to the resolver service. Now, the hosts file is no longer parsed on each query.
- Add support for DNS_QUERY_WIRE_ONLY and DNS_QUERY_NO_WIRE_QUERY flags to R_ResolverQuery.
- GetCurrentTimeInSeconds() should return DWORD instead of DNS_STATUS.

sdk/include/reactos/idl/dnsrslvr.idl

@@ -10,6 +10,9 @@
 cpp_quote("#ifndef _WINDNS_INCLUDED_")
 #include <windns.h>
 cpp_quote("#endif")
+cpp_quote("#ifndef _WINDNS_UNDOC_H_")
+#include <windns_undoc.h>
+cpp_quote("#endif")
 
 typedef [handle, string] LPWSTR DNSRSLVR_HANDLE;
 

sdk/include/reactos/windns_undoc.h

@@ -27,7 +27,7 @@ WINAPI
 DnsGetCacheDataTable(
     _Out_ PDNS_CACHE_ENTRY *DnsCache);
 
-DNS_STATUS
+DWORD
 WINAPI
 GetCurrentTimeInSeconds(VOID);