Print out a message when there is a file created to store constant tensors

[tungld]

This PR adds code to print out a message when there is a file created to store constant tensors, the message is like this:

[1/6] Mon Mar  9 01:32:02 2026 (0s) Importing ONNX Model to MLIR Module from "model.onnx"
[2/6] Mon Mar  9 01:32:32 2026 (30s) Compiling and Optimizing MLIR Module
Constants in the model exceed the thresholds (single constant <= 1.000000e+00 KB, total constants <= 1.500000e+00 
GB). Stored them in an external file: "test.constants.bin". Make sure to put this file in the same folder as
 the generated model or set OM_CONSTANT_ATH to the folder having this file. For constants-related settings, 
see options --store-constants-to-file, --constants-to-file-single-threshold and --constants-to-file-total-threshold
[3/6] Mon Mar  9 01:44:45 2026 (763s) Translating MLIR Module to LLVM and Generating LLVM Optimized Bitcode
[4/6] Mon Mar  9 01:50:49 2026 (1127s) Generating Object from LLVM Bitcode
[5/6] Mon Mar  9 01:52:01 2026 (1199s) Linking and Generating the Output Shared Library
[6/6] Mon Mar  9 01:52:02 2026 (1200s) Compilation completed. Generated "test.so"

[tungld]

To fix a warning: Verbose is an enum constant. This should be the compile option -v (VerboseOuput).

[tungld]

This is a bug. I fixed it.

[tungld]

Print out the generated .so file's name.