feat: protoc should not be required

[dprats]

This PR addresses: #55.

Current state of the world (before this PR)

The CLI requires protoc to be installed in user's computer to run. However, the protobuf files are already in the repo, so this is actually unnecessary.

What this PR does

Main Intent

1. Updates build.rs so it checks for the previously generated protobuf files... so it does not block on if protoc is missing.
2. Updates the CI file so it does not install protoc
3. Updates the cargo.toml so it does not use prost-build (which requires protoc be installed)

Secondary Intent

1. Bumps the version number

How I tested this PR

1. I removed protoc from my computer
2. I tested so that:

$ protoc --version
> zsh: command not found: protoc

3. I ran the cargo run to make sure that the app still built and ran <-- this passes as expected

# to clean the local builds
$ cargo clean

# build to see proving
$ cargo run --release ...

5. I ran the install.sh to make sure that the app still built and ran <--- this is currently NOT working because it does a fresh install from github (not the code in this PR).

[github-actions]

Visit the preview URL for this PR (updated for commit 8ec2d5c):

https://nexus-cli--pr194-dprats-protoc-should-v52ggdyk.web.app

_{(expires Thu, 19 Dec 2024 19:02:19 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: 815ec4c632754f56eccfacfc0919559f5a85a0f1}