[ENG-1528] Add README

[xavier-petit]

What does this PR do?

Fixes #

What are the observable changes?

Good PR checklist

• Title makes sense
• Is against the correct branch
• Only addresses one issue
• Properly assigned
• Added/updated tests
• Added/updated documentation
• Properly labeled

Additional Notes

[linear]

ENG-1528 [golang libs] Create/update READMEs

Description

Create or update the READMEs for the repositories in the acceptance criteria.

The idea is not to be overly verbose, but simply to write a few lines describing the service/library & its use. If possible/needed add ways to use the provided tools (CLIs and so on) or warnings about the most common issues/catches on this service.

You can use the "Satisfying READMEs" in the parent task as examples if needs be.

Acceptance Criteria

• https://github.com/upfluence/cfg
• https://github.com/upfluence/cql
• https://github.com/upfluence/errors
• https://github.com/upfluence/log
• https://github.com/upfluence/pkg
• https://github.com/upfluence/sql
• https://github.com/upfluence/stats
• https://github.com/upfluence/uhttp-go
• https://github.com/upfluence/iqdata-go (only used by instagram-scrapper?)
• https://github.com/upfluence/noise-classification
• https://github.com/upfluence/ner_analyzer

[BillotP]

Same comment as with the log package ( upfluence/log#4 ), could you add a small example somewhere ?