Connect sys call comments and tests

[davidge20]

Description

Fixes # (issue)

All functions related to and including connect_syscall were commented out
A single test case was added to test out a UDP connection using the AF_INET6 address family. After feedback based on the correctness of the test, I will add more tests to the PR.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Test A attempts to set up a UDP connection using the AF_INET6 address family. Currently, the test fails.
To reproduce run cargo test --lib command inside the safeposix-rust directory.

• Test A - lind_project/src/safeposix-rust/src/tests/networking_tests.rs/ut_lind_net_connect_basic_udp_ipv6()

Checklist:

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been added to a pull request and/or merged in other modules (native-client, lind-glibc, lind-project)

[davidge20]

@qianxichen233 Hi, I'm requesting your review for my PR

[davidge20]

@namanlalitnyu Hi, requesting your review as well

[rennergade]

Requested several changes. Generally you need to flesh out the why a bit more.

[rennergade]

Great! Approved.