Add wasm mime type

Fixes #1217

src/civetweb.c

@@ -8406,6 +8406,7 @@ static const struct {
     {".pdf", 4, "application/pdf"},
     {".ps", 3, "application/postscript"},
     {".rtf", 4, "application/rtf"},
+    {".wasm", 5, "application/wasm"},
     {".xhtml", 6, "application/xhtml+xml"},
     {".xsl", 4, "application/xml"},
     {".xslt", 5, "application/xml"},