dynamic_modules: switch to crate_universe to remove manual bindgen

[mathetake]

Commit Message: dynamic_modules: switch to crate_universe to remove manual bindgen
Additional Description:
This is a follow up on #35914 which ended up requiring a manual
step to generate the binding for the ABI headers.
This switches to use crate_universe and use the bindgen as a dev-dependency.
As a result, we can adopt the build.rs script to generate the C bindings at build
time instead of the manual bindgen step.

This also allows us to freely add a crate dependency when it becomes necessary.

Risk Level: N/A
Testing: N/A
Docs Changes: N/A
Release Notes: N/A
Platform Specific Features:
[Optional Runtime guard:]
[Optional Fixes #Issue]
[Optional Fixes commit #PR or SHA]
[Optional Deprecated:]
[Optional API Considerations:]

[repokitteh-read-only]

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🐱

Caused by: #36240 was opened by mathetake.

see: more, trace.

[repokitteh-read-only]

CC @envoyproxy/dependency-shepherds: Your approval is needed for changes made to (bazel/.*repos.*\.bzl)|(bazel/dependency_imports\.bzl)|(api/bazel/.*\.bzl)|(.*/requirements\.txt)|(.*\.patch).
envoyproxy/dependency-shepherds assignee is @moderation

🐱

Caused by: #36240 was opened by mathetake.

see: more, trace.

[mathetake]

cc @phlax - i am trying to enable crate_universe here which I think doesn't work for gcc and compiletime_options jobs. let's see

[mathetake]

so crate_universe itself seems to be working. The next is to see whether the bindgen actually works or not

[mathetake]

i think it's all good now 🤞