feat(foundryup): robustness checks and shell improvements

[sambacha]

Motivation

foundryup is not robust.

make it robust.

Solution

sanity checks and etc.

check_bins_in_use

Introduces a new function, check_bins_in_use which makes sure that something like forge build -w isn't running.

fix check_cmd

also fixes check_cmd output

fix curl/wget

enforce TLS v1.2

Note

need_cmd curl actually would prevent wget from running, as the script would error out and there is no if/else logic to fail over to using wget anyway.

[sambacha]

really some testing of the scripts should be implemented, however after trying to get Docker container testing added, not willing to just yolo some tests into here

[mattsse]

maybe @onbjerg or @DaniPopes know how to review this?