Wasm: Register a new WebAssembly language module type.

This is the first patch in adding WebAssembly language module support.

This just adds a new NXT_APP_WASM type, required by subsequent commits.

Reviewed-by: Alejandro Colomar <alx@nginx.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

src/nxt_application.h

@@ -21,6 +21,7 @@ typedef enum {
     NXT_APP_PERL,
     NXT_APP_RUBY,
     NXT_APP_JAVA,
+    NXT_APP_WASM,
 
     NXT_APP_UNKNOWN,
 } nxt_app_type_t;

src/nxt_router.c

@@ -280,6 +280,7 @@ static const nxt_str_t  *nxt_app_msg_prefix[] = {
     [NXT_APP_PERL]      = &http_prefix,
     [NXT_APP_RUBY]      = &http_prefix,
     [NXT_APP_JAVA]      = &empty_prefix,
+    [NXT_APP_WASM]      = &empty_prefix,
 };