Read version from resource instead of hard-coding it

[naveenOnarayanan]

• Seems like the hard-coded version keeps drifting everytime a new release is made (current release 7.1.0, but code still shows 7.0.0).
• This uses resource jar approach to embed the version into the binary and read it at runtime. This ensures that the version is always up to sync with release.

> git tag -a 7.1.1 -m "Version bump" 

> bazel-out/darwin_arm64-fastbuild/bin/cli/bazel-diff --version
7.1.1

# If built off master (no tags)
> bazel-out/darwin_arm64-fastbuild/bin/cli/bazel-diff --version                                                                                ✔
acd415a165d8515d9d94be18f14dcd62d0c1bf1c

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