Added file name and time elapsed to onnx-mlir messages

[AlexandreEichenberger]

We already printed the "time of day", found it useful to also add the elapsed time.
In addition, when running our backend tests, it is sometime convenient to know which benchmark crashes... so adding the file name to the first message is useful.

> onnx-mlir roberta-base-11.onnx -enable-timing -O3 -march=arm64
[1/6] Wed Aug 21 11:48:07 2024 (0s) Importing ONNX Model to MLIR Module from "roberta-base-11.onnx"
[2/6] Wed Aug 21 11:48:07 2024 (0s) Compiling and Optimizing MLIR Module
[3/6] Wed Aug 21 11:48:09 2024 (2s) Translating MLIR Module to LLVM and Generating LLVM Optimized Bitcode
[4/6] Wed Aug 21 11:48:55 2024 (48s) Generating Object from LLVM Bitcode
[5/6] Wed Aug 21 11:49:15 2024 (68s) Linking and Generating the Output Shared Library
[6/6] Wed Aug 21 11:49:15 2024 (68s) Compilation completed

[chentong319]

LGTM!

[jenkins-droid]

Jenkins Linux amd64 Build #15423 [push] Added file name and time... started at 16:24

[jenkins-droid]

Jenkins Linux s390x Build #15430 [push] Added file name and time... started at 17:24

[jenkins-droid]

Jenkins Linux ppc64le Build #14453 [push] Added file name and time... started at 17:33

[jenkins-droid]

Jenkins Linux amd64 Build #15423 [push] Added file name and time... passed after 1 hr 6 min

[jenkins-droid]

Jenkins Linux s390x Build #15430 [push] Added file name and time... passed after 1 hr 29 min

[jenkins-droid]

Jenkins Linux ppc64le Build #14453 [push] Added file name and time... passed after 2 hr 0 min