core-clp: Add CLI command to extract a compressed file as IR.

[haiqi96]

References

based on #417

Description

This changes adds ir decompression execution path to the clp executable.

The PR contains two notable changes:

1. The PR introduce a new command clp i. The command allows user to decompress a file split to one or multiple IR files, by providing the orig_file_id and a message index. It also let user pick a custom threshold for the uncompressed IR size and a directory to temporarily write IRs to.
2. Since the message_index and the orig_file_id can unique identiy a file split, we implemented a simplified decompression logic in IrDecompression.cpp. Compared to the decompression.cpp,

Validation performed

To validate the functionality, we compressed a 64MB file into archive(s). We then decompressed it into mulitple IRs, decoded and concatnate them, and did a binary comparison with the original file.

We used two configuration to cover all the possible cases:

1. Compressed a 64MB hadoop log using smaller encoded file size and archive size, such that it splits the original file into 3 splits across 2 archives. We then decompressed all 3 IRs by running clp 3 times, using different message index

2. Compressed the 64MB hadoop log using default settings, so only one file and archive was generated. We then decompressed the IR using a 32MB threshold, generating 3 IRs on disk.

[kirkrodrigues]

For the PR title, how about:

core-clp: Add CLI command to extract a file from an archive as IR.

[haiqi96]

For the PR title, how about:

core-clp: Add CLI command to extract a file from an archive as IR.

how about core-clp: Add CLI command to extract a compressed file as IR.

An archive gives me the impression that user needs to specifiy an archive.

[kirkrodrigues]

For the PR title, how about:
core-clp: Add CLI command to extract a file from an archive as IR.

how about core-clp: Add CLI command to extract a compressed file as IR.

sgtm