Add kani harness and auto-generated bolero harnesses

[cvick32]

Summary of the PR

Adds failing 5 Kani harnesses and 7 auto-generated Bolero harnesses.

Running cargo kani fails with:

SUMMARY:
 ** 1 of 334 failed (7 unreachable)
Failed Checks: This is a placeholder message; Kani doesn't support message formatted at runtime
 File: "/Users/ec2-user/.rustup/toolchains/nightly-2024-05-28-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/result.rs", line 1679, in std::result::unwrap_failed

VERIFICATION:- FAILED
Verification Time: 28.542933s

Summary:
Verification failed for - fam::kani_harnesses::prove_capacity
Verification failed for - fam::kani_harnesses::prove_len
Verification failed for - fam::kani_harnesses::prove_as_fam_struct_ptr
Verification failed for - fam::kani_harnesses::prove_into_raw
Verification failed for - fam::kani_harnesses::prove_as_mut_fam_struct
Complete - 0 successfully verified harnesses, 5 failures, 5 total.

Requirements

Before submitting your PR, please make sure you addressed the following
requirements:

• All commits in this PR have Signed-Off-By trailers (with
  git commit -s), and the commit message has max 60 characters for the
  summary and max 75 characters for each description line.
• All added/changed functionality has a corresponding unit/integration
  test.
• All added/changed public-facing functionality has entries in the "Upcoming
  Release" section of CHANGELOG.md (if no such section exists, please create one).
• Any newly added unsafe code is properly documented.