Prepare code for formatting

- Add missing `#include` in `ripple/core/JobTypeInfo.h`
- Protect version string from clang-format in
  `ripple/protocol/impl/BuildInfo.cpp`.
  `Builds/CMake/RippledVersion.cmake` searches for this line by pattern.

src/ripple/core/JobTypeInfo.h

@@ -20,6 +20,8 @@
 #ifndef RIPPLE_CORE_JOBTYPEINFO_H_INCLUDED
 #define RIPPLE_CORE_JOBTYPEINFO_H_INCLUDED
 
+#include <ripple/core/Job.h>
+
 namespace ripple
 {
 

src/ripple/protocol/impl/BuildInfo.cpp

@@ -31,7 +31,9 @@ namespace BuildInfo {
 //  The build version number. You must edit this for each release
 //  and follow the format described at http://semver.org/
 //------------------------------------------------------------------------------
+// clang-format off
 char const* const versionString = "1.6.0-b2"
+// clang-format on
 
 #if defined(DEBUG) || defined(SANITIZER)
         "+"