Add option for h5repack timing (#1142)

* Add timing option to h5repack

* Adjust help text

* fix format

* fix typos

* Correct spacing

* Change timing to use H5Timer

* Committing clang-format changes

Co-authored-by: github-actions <41898282+github-actions[bot]@users.noreply.github.com>

tools/test/h5repack/testfiles/h5repack-help.txt

@@ -3,7 +3,8 @@ usage: h5repack [OPTIONS] file1 file2
   file2                    Output HDF5 File
   OPTIONS
    -h, --help              Print a usage message and exit
-   -v, --verbose           Verbose mode, print object information
+   -v N, --verbose=N       Verbose mode, print object information.
+      N - is an integer greater than 1, 2 displays read/write timing
    -V, --version           Print version number and exit
    -n, --native            Use a native HDF5 type when repacking
    --enable-error-stack    Prints messages from the HDF5 error stack as they