Add options to build with rtti and exceptions

Some systems we want to integrate with expect these features.

Diffs=
d65b239c5 Add options to build with rtti and exceptions (#6121)

Co-authored-by: Chris Dalton <99840794+csmartdalton@users.noreply.github.com>

skia/renderer/build/premake5.lua

@@ -37,8 +37,6 @@ do
     flags {
         'FatalCompileWarnings',
     }
-    exceptionhandling 'off'
-    rtti 'off'
 
     filter "system:windows"
     do