feat(flags): add support for feature flags

[Maddiaa0]

Description

Adds support to noirup to install from source or from a git repo with specific feature flags enabled.

Usage:

The installer for Nargo.
Update or revert to a specific Nargo version with ease.
USAGE:
    noirup <OPTIONS>
OPTIONS:
    -h, --help      Print help information
    -v, --version   Install a specific version
    -b, --branch    Install a specific branch
    -P, --pr        Install a specific Pull Request
    -C, --commit    Install a specific commit
    -r, --repo      Install from a remote GitHub repo (uses default branch if no other options are set)
    -p, --path      Install a local repository
    -f, --features  Activates feature flags when building from source

Example:
If installing from a local repo with the aztec feature flag enabled:

noirup -p . -f aztec

Problem*

Resolves

Summary*

Additional Context

PR Checklist*

• I have tested the changes locally.
• I have formatted the changes with Prettier and/or cargo fmt on default settings.

[TomAFrench]

Couple of small changes but looks good.

[Savio-Sou]

@Maddiaa0 good to re-review?

[Maddiaa0]

I think so

[TomAFrench]

LGTM