DLPX-93404 LTS 24.04: delphix-rust must explicitly state that it provides rustfmt & cargo-fmt

[palash-gandhi]

Problem:

delphix-rust provides cargo-fmt and rustfmt but does not explicitly specify it.
This causes conflicts when building a package that requires these.

Solution:

Specify them.

Testing

build-package: https://ops-jenkins.eng-tools-prd.aws.delphixcloud.com/job/linux-pkg/job/os-upgrade/job/build-package/job/delphix-rust/job/pre-push/70/console

delphix@pg-fluent:~$ /export/home/delphix/.local/bin/aws s3 cp s3://dev-de-images/builds/jenkins-ops/linux-pkg/os-upgrade/build-package/delphix-rust/pre-push/70/delphix-rust_1.80.0-1delphix.2025.02.14.21.55_amd64.deb .
download: s3://dev-de-images/builds/jenkins-ops/linux-pkg/os-upgrade/build-package/delphix-rust/pre-push/70/delphix-rust_1.80.0-1delphix.2025.02.14.21.55_amd64.deb to ./delphix-rust_1.80.0-1delphix.2025.02.14.21.55_amd64.deb

delphix@pg-fluent:~$ dpkg -I delphix-rust_1.80.0-1delphix.2025.02.14.21.55_amd64.deb
 new Debian package, version 2.0.
 size 223817714 bytes: control archive=854967 bytes.
     590 bytes,    11 lines      control
 4117037 bytes, 39921 lines      md5sums
 Package: delphix-rust
 Version: 1.80.0-1delphix.2025.02.14.21.55
 Architecture: amd64
 Maintainer: Delphix Engineering <eng@delphix.com>
 Installed-Size: 1320675
 Conflicts: cargo, cargo-fmt, rust-gdb, rustc, rustfmt
 Provides: cargo (= 1.80.0-1delphix.2025.02.14.21.55), cargo-fmt (= 1.80.0-1delphix.2025.02.14.21.55), rust-gdb (= 1.80.0-1delphix.2025.02.14.21.55), rustc (= 1.80.0-1delphix.2025.02.14.21.55), rustfmt (= 1.80.0-1delphix.2025.02.14.21.55)
 Section: misc
 Priority: optional
 Description: Rust - A programming language empowering everyone to build
   reliable and efficient software.