perf: do FAT LTO and singular codegen-unit on release

[de-sh]

Fixes #224 .

Description

Optimize release builds by building them in a special profile release-lto that:

1. Enables FAT LTO
2. Uses codegen-unit = 1
   This is intended to improve the quality of parseable binary compiled at release, in terms of performance and size.

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This PR has:

• been tested to ensure log ingestion and log query works.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added documentation for new or modified features or behaviors.

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[de-sh]

I have read the CLA Document and I hereby sign the CLA

[de-sh]

Decision on this front, we will move these changes to a specific profile release-lto that will be used during compilation for binary generation on GitHub release.

[coveralls]

Pull Request Test Coverage Report for Build 12370139449

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 11.591%

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Totals
Change from base Build 12369242409:	0.0%
Covered Lines:	2111
Relevant Lines:	18212

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💛 - Coveralls