Drop the benchmark dependency

[Earlopain]

Motivation

tapioca currently depends on the benchmark gem because of a change to Ruby bundled gems. The functionality is trivial though, and I don't think you have to take on a dependency for that.

Implementation

Just use Process.clock_gettime directly.

Tests

No behaviour change. I just ran some cli commands and they still print the time in seconds. Probably the output is also already asserted against somewhere.

[st0012]

Thanks for the PR. Can you fix typechecking errors?

[Earlopain]

Oops, yeah

[st0012]

We have addressed a few CI issues this week, which should make this PR's build green. Can you rebase the PR? Thx

[st0012]

Based on CI failures, it looks like some dev dependencies Tapioca relies on (identity_cache, rails for example) uses benchmark but doesn't declare it as a dependency (at least not in the released versions Tapioca currently uses).
I think we'd have to wait for them to update their dependencies, cut a release, and bump them in Tapioca, before we can merge this one.

[Morriar]

Code Review - Ruby Reviewer

Found 2 issue(s) that may need attention:

1. [MEDIUM] Missing Sorbet Signatures

Found 1 new methods but only 0 Sorbet signatures. Type signatures improve code safety and documentation.

Suggested fix:
Add Sorbet sig annotations to new methods.

Example:

sig { params(name: String).returns(User) }
def find_user(name)
  # ...
end

---

2. [MEDIUM] No Test Changes

Found 2 code file changes but no test file changes. New functionality should include tests.

Suggested fix:
Add tests for the new or modified functionality.

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This is a draft review. Please review manually before approving.