feat: add support for bazel

[jayakasadev]

• Add support for bazel to allow users to add snmalloc as a dependency and use in their projects
• Create fuzztest test target using snmalloc

[jayakasadev]

@microsoft-github-policy-service agree

@microsoft-github-policy-service agree

[mjp41]

@jayakasadev thanks for doing this. I am afraid I am not familiar with Bazel, so I find this a bit hard to review, but I'll try my best ;-) @SchrodingerZhu are you familiar with Bazel? If so, would you be able to take a pass of this?

@jayakasadev, Do you think you would be able to add a couple of build targets to the github actions to build this with Bazel? I am concerned that I will break things down the line without CI checking this.

[SchrodingerZhu]

I am not that familiar with Bazel while I do have worked on it a bit due to LLVM's adoption. I am scanning through the PR now.

[SchrodingerZhu]

Other parts looks good to me. Please address devnexen's concern.

[devnexen]

@SchrodingerZhu feels free to merge :)

[jayakasadev]

@SchrodingerZhu lmk if anymore changes are needed