clang-format: update to latest version

Pick up latest .clang-format file from the docs repository.
Fix formatting on all files.
Minor compile fixes due to GCC10 and sdbusplus changes.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie1f7a4e59b6cf015310effef50d558ff59731024
diff --git a/file.hpp b/file.hpp
index d762012..e23c3ce 100644
--- a/file.hpp
+++ b/file.hpp
@@ -28,8 +28,7 @@
      * @param[in] fd - File descriptor
      */
     FileDescriptor(int fd) : fd(fd)
-    {
-    }
+    {}
 
     ~FileDescriptor()
     {