[clang][NFC] Add CWG882 test (Defining main as deleted) (#101382)

https://cplusplus.github.io/CWG/issues/882.html

This was implemented for Clang 3.5 by
b63b6ee

Author: MitalAshok

clang/test/CXX/drs/cwg8xx.cpp

@@ -30,3 +30,9 @@ void g(int i) {
 }
 #endif
 } // namespace cwg873
+
+// cwg882: 3.5
+#if __cplusplus >= 201103L
+int main() = delete;
+// since-cxx11-error@-1 {{'main' is not allowed to be deleted}}
+#endif

clang/www/cxx_dr_status.html

@@ -5161,7 +5161,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
     <td><a href="https://cplusplus.github.io/CWG/issues/882.html">882</a></td>
     <td>CD2</td>
     <td>Defining <TT>main</TT> as deleted</td>
-    <td class="unknown" align="center">Unknown</td>
+    <td class="full" align="center">Clang 3.5</td>
   </tr>
   <tr id="883">
     <td><a href="https://cplusplus.github.io/CWG/issues/883.html">883</a></td>