feat: add program examples for light-token SDK (native + anchor)

Author: tilo-14

program-examples/README.md

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+# Light Token Program Examples
+
+Program examples for compressed tokens (cToken) using Light Protocol.
+
+## Structure
+
+```
+program-examples/
+├── native/     # Native Rust programs with CPI examples
+├── anchor/     # Anchor programs (coming soon)
+└── CLAUDE.md   # Detailed documentation
+```
+
+## Operations
+
+| Operation | Description |
+|-----------|-------------|
+| **create-mint** | Create a compressed mint (cMint) with optional metadata |
+| **create-ata** | Create an associated cToken account |
+| **create-token-account** | Create a cToken account with custom owner |
+| **mint-to** | Mint tokens from cMint to cToken account |
+| **transfer-interface** | Unified transfer (cToken↔cToken, SPL↔cToken) |
+| **close** | Close a cToken account and reclaim rent |
+
+## Build
+
+### Native
+
+```bash
+cd native/
+cargo build-sbf
+```
+
+### Anchor
+
+```bash
+cd anchor/<operation>/
+anchor build
+```
+
+## Test
+
+See individual READMEs in `native/` and `anchor/` directories.
+
+## Resources
+
+- [Light Protocol Documentation](https://www.zkcompression.com/)
+- [Light Protocol GitHub](https://github.com/Lightprotocol/light-protocol)

program-examples/anchor/Anchor.toml

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+[features]
+seeds = false
+skip-lint = false
+
+[programs.localnet]
+light_token_anchor_examples = "LtAnchorExmp1eProgram111111111111111111111111"
+
+[programs.devnet]
+light_token_anchor_examples = "LtAnchorExmp1eProgram111111111111111111111111"
+
+[registry]
+url = "https://api.apr.dev"
+
+[provider]
+cluster = "Localnet"
+wallet = "~/.config/solana/id.json"
+
+[scripts]
+test = "ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"
+