fix: output the general usage of cli

[TwistingTwists]

Fixes #1036

Description

Aims to make CLI more user friendly to use. This PR adds a hint text for indicating how to use API.

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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 ✍️ ✅

[TwistingTwists]

the final output looks like

> ./target/debug/parseable
Parseable v1.6.3

Cloud Native, log analytics platform for modern applications.

Usage:
parseable [command] [options..]


Join the community at https://logg.ing/community.

Commands:
  local-store  Start Parseable with a drive as storage
  s3-store     Start Parseable with S3 or compatible as storage
  blob-store   Start Parseable with Azure Blob storage
  help         Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

[TwistingTwists]

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

[TwistingTwists]

recheck

[coveralls]

Pull Request Test Coverage Report for Build 12492922723

Details

• 0 of 10 (0.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.006%) to 11.489%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/option.rs	0	10	0.0%

Totals
Change from base Build 12465451984:	-0.006%
Covered Lines:	2092
Relevant Lines:	18209

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💛 - Coveralls

[nitisht]

Skipping CI because this is a text change only.