Add "verilog" and "SystemVerilog" to mime list

Bug: Issue 4614
Change-Id: I8c75759109108c4c1287557baa771b5ab70f9bbc

polygerrit-ui/app/elements/diff/gr-syntax-layer/gr-syntax-layer.js

@@ -79,9 +79,11 @@
     'text/x-sh': 'bash',
     'text/x-sql': 'sql',
     'text/x-swift': 'swift',
+    'text/x-systemverilog': 'sv',
     'text/x-tcl': 'tcl',
     'text/x-twig': 'twig',
     'text/x-vb': 'vb',
+    'text/x-verilog': 'v',
     'text/x-yaml': 'yaml',
     'text/vbscript': 'vbscript',
   };

resources/com/google/gerrit/server/mime/mime-types.properties

@@ -210,6 +210,8 @@ sql = text/x-sql
 ss = text/x-scheme
 st = text/x-stsrc
 stex = text/x-stex
+sv = x-systemverilog
+svh = x-systemverilog
 swift = text/x-swift
 tcl = text/x-tcl
 tex = text/x-latex