.github: Add a new workflow to cross compile and build

[jinankjain]

Summary of the PR

In the past, we have seen that there were failure while cross compiling the crate and due to which we broke pipeline of the dependent crates. Thus, add a cross compile build test for the crate to avoid such breakage in the future.

Requirements

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

• [x] 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.
• [x] All added/changed functionality has a corresponding unit/integration test.
• [x] All added/changed public-facing functionality has entries in the "Upcoming Release" section of CHANGELOG.md (if no such section exists, please create one).
• [x] Any newly added unsafe code is properly documented.

[jinankjain]

@russell-islam There are some tokens missing for CloudHypervisor build. Could you please look into it?