Feat/cpp scaffold

[mmorgan00]

Issue

Fixes #13 : Initial Cpp scaffolding with basic bit->lexicon dictionary

Summary

• Establishes basic cpp project structure in repo using cmake and google test, with FetchContent and VcPkg for build support
• Defines clang-tidy rules and adds a pre-commit hook for clang-tidy and format

Key Changes

• Minimal executable to verify build path and testing work

Notable Implementation Details

• None

Design Rationale

• "Devil you know" tooling decisions

Test Plan

• GTest links properly and runs, formatters properly link cmake compile commands

[icahoon]

lgtm

[XenonofArcticus]

Looks solid.