bug: add bindings to grab ppid in some cases on macos

[ClementTsang]

Description

A description of the change and what it does. If relevant (such as any change that modifies the UI), please provide screenshots of the change:

The sysinfo crate grabs data in a way that sometimes will not work based on permissions on macOS, leading to some missing data - one case this comes up is parent PIDs, particularly noticeable in tree mode. Unless you run the program with sudo, if the parent PID is 1, the current sysinfo crate will fail to grab the parent PID for a process.

This can be circumvented by taking a page from htop's book and use kinfo_procs (see here). This is actually what heim uses, and we can leverage some of its implementation over here to grab ppid in cases that sysinfo fails. In the future, we can further leverage this to get even more data (e.g. for missing processes).

We can see this demonstrated here - left is the new implementation, right is the old. We see how the left one correctly shows the tree structure since it can actually detect the PPIDs, while the right fails to do this correctly since it cannot find the PPID for some of the processes and ends up promoting those processes to orphans.

Issue

If applicable, what issue does this address?

Closes: #

Testing

If relevant, please state how this was tested. All changes must be tested to work:

If this is a code change, please also indicate which platforms were tested:

• Windows
• macOS
• Linux

Checklist

If relevant, ensure the following have been met:

• Areas your change affects have been linted using rustfmt (cargo fmt)
• The change has been tested and doesn't appear to cause any unintended breakage
• Documentation has been added/updated if needed (README.md, help menu, etc.)
• The pull request passes the provided CI pipeline
• There are no merge conflicts
• If relevant, new tests were added (don't worry too much about coverage)

[codecov-commenter]

Codecov Report

Base: 23.57% // Head: 23.57% // No change to project coverage 👍

Coverage data is based on head (5459b02) compared to base (e7b31df).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #825   +/-   ##
=======================================
  Coverage   23.57%   23.57%           
=======================================
  Files          60       60           
  Lines       13291    13291           
=======================================
  Hits         3133     3133           
  Misses      10158    10158           

Impacted Files	Coverage Δ
src/app/data_farmer.rs	8.36% <0.00%> (ø)

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