migrate cpp folder to leetkick format

Author: charliesbot

README.md

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+# LeetCode Practice Workspace
+
+This workspace was created with [leetkick](https://github.com/charliesbot/leetkick) - a CLI tool for organizing LeetCode practice.
+
+## Usage
+
+### Fetch a new problem
+```bash
+leetkick fetch two-sum --language typescript
+```
+
+### Run tests
+```bash
+leetkick test 1 --language typescript
+leetkick test two-sum --language typescript
+```
+
+### Add a new language
+```bash
+leetkick add python
+```
+
+## Commands
+
+- `leetkick init` - Initialize empty workspace
+- `leetkick add <language>` - Add language workspace
+- `leetkick fetch <problem> --language <lang>` - Fetch problem
+- `leetkick test <problem> --language <lang>` - Run tests
+
+Happy coding! 🚀

cpp/.clang-format

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+---
+Language: Cpp
+BasedOnStyle: Google
+IndentWidth: 4
+TabWidth: 4
+UseTab: Never
+ColumnLimit: 100
+AccessModifierOffset: -2
+AlignAfterOpenBracket: Align
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+BreakBeforeBraces: Attach
+IndentCaseLabels: true
+SpaceAfterCStyleCast: false
+SpaceBeforeParens: ControlStatements
+Standard: c++17

cpp/.gitignore

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+# Compiled binaries
+*.o
+*.exe
+test_runner
+a.out
+
+# IDE files
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS files
+.DS_Store
+Thumbs.db