chore: Prepare 0.16.0 release

[TimePrinciple]

Summary of the PR

Prepare 0.16.0 release to incorporate riscv64 build support, and some minor improvements

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.

[roypat]

Could you add a changelog entry about #299 for the release? We forgot in that PR 😭

[TimePrinciple]

Ah, need to re-trigger CI because dialing is too frequent, which results Resource unavailable and the like failure :(

This problem is addressed in rust-vmm/rust-vmm-container#118

[TimePrinciple]

@rbradford PTAL, this is the prerequisite for linux-loader :)

[roypat]

@rbradford what do you think about merging #278 before the release? It needs a minor bump anyway, so now would be a good opportunity I think

[russell-islam]

@TimePrinciple are you planing to update other rust-vmm crates after this release?

[TimePrinciple]

@TimePrinciple are you planing to update other rust-vmm crates after this release?

Sure thing, what can I help :)

[russell-islam]

@TimePrinciple are you planing to update other rust-vmm crates after this release?

Sure thing, what can I help :)

In order to use this crate in Cloud-Hypervisor we have to update other crates with this version of vm-memory and create release if necessary, see my recent PRs, Crates are
vhost*, linux-loader, vfio, vfio-user etc.

[TimePrinciple]

@TimePrinciple are you planing to update other rust-vmm crates after this release?

Sure thing, what can I help :)

In order to use this crate in Cloud-Hypervisor we have to update other crates with this version of vm-memory and create release if necessary, see my recent PRs, Crates are vhost*, linux-loader, vfio, vfio-user etc.

Noted :) As of vfio (depends on kvm-ioctls) and linux-loader, I was about to integrate RISC-V support in next release, so perhaps these two would take longer. But I will take care of the rest as soon as this is released, would that be acceptable 🙂