support no_proxy excatly like CURL

[TingDaoK]

Issue #, if available:

• Support NO_PROXY environment variable #413

Description of changes:

• Since NO_PROXY has no standard yet. https://about.gitlab.com/blog/we-need-to-talk-no-proxy/ and likely won't have any standard in the foreseeable future (there been many discussions but none of them really driving to a conclusion.).
• It's also very tricky about how to match the host and IP address, and how to handle concern cases and invalid cases.
• In the end, I decided to follow exactly the curl implementation from noproxy.c at 8.14.1
• The implementation basically replicated the CURL logic.
• All the CIDR and host validation all followed how CURL implement it.
• Given no standards, we are taking curl as the the standard here.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.30769% with 11 lines in your changes missing coverage. Please review.

Project coverage is 79.74%. Comparing base (a04c10a) to head (6c6091a).

Files with missing lines	Patch %	Lines
source/no_proxy.c	93.33%	9 Missing ⚠️
source/proxy_connection.c	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #522      +/-   ##
==========================================
+ Coverage   79.62%   79.74%   +0.11%     
==========================================
  Files          27       28       +1     
  Lines       11702    11833     +131     
==========================================
+ Hits         9318     9436     +118     
- Misses       2384     2397      +13     

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