hard times with nimble build dependencies and No SSL/TLS CA certificates found

[aphor]

Description

nimble build tries to download a resource from https://github... URL, but can't because it fails to validate the cert because
No SSL/TLS CA certificates found

Nim Version

$ nim -v
Nim Compiler Version 2.0.2 [FreeBSD: amd64]
Compiled at 2024-04-10
Copyright (c) 2006-2023 by Andreas Rumpf

active boot switches: -d:release

This is installed from the FreeBSD 13 package repository.

Current Output

at the dependency verification stage...

  Executing /usr/local/nim/bin/nim -v
    Reading official package list
    Prompt: No local packages.json found, download it from internet? -> [forced yes]
Downloading Official package list
     Trying https://github.com/nim-lang/packages/raw/master/packages.json
   Warning: Could not download: No SSL/TLS CA certificates found.
     Trying https://irclogs.nim-lang.org/packages.json
     Trying https://nim-lang.org/nimble/packages.json
packageinfo.nim(180)     fetchList

    Error:  Refresh failed
        ... Could not download: No SSL/TLS CA certificates found.
   Warning: Not removing temporary path because of debug verbosity: /tmp/nimble_3203

I looked for documentation and found something promising
https://nim-lang.org/docs/ssl_certs.html
but disappointingly, these environment variables don't seem to affect the nimble behavior, and the other stuff I found while searching makes me think security isn't a very high priority.

### Expected Output

```text
Build finds dependencies and runs, without needing to disable supply-chain security measures like SSL cert validation.

Possible Solution

Maybe nimble should use the std/ssl_certs module documented at https://nim-lang.org/docs/ssl_certs.html

Additional Information

I'm trying to set up some CI/CD builds, and this is a deal breaker.

[nitely]

Dup of #904 which offers some solutions