Add EfikCoin Eternal (ECE) token logo

This PR adds the official logo and metadata for EfikCoin Eternal (ECE) token on the Binance Smart Chain.

**Token Details:**
- Contract Address (Checksum): `0x9f8c29e496ecb6c39c221458f211234dfcb233e0`
- Token Name: EfikCoin Eternal
- Token Symbol: ECE
- Decimals: 18
- Blockchain: Binance Smart Chain (BSC) – folder path: `blockchains/smartchain/assets/0x9f8c29e496ecb6c39c221458f211234dfcb233e0/`

**Project Information:**
- Website: https://efikcoinofficialecosystem.github.io/Efikcoin.ecosystem/
- Explorer: https://bscscan.com/address/0x9f8c29e496ecb6c39c221458f211234dfcb233e0
- GitHub: https://github.com/Efikcoinofficialecosystem/Efikcoin-Eternal

**Logo Requirements Checklist:**
- [x] File name: `logo.png` (all lowercase)
- [x] Dimensions: 256x256 pixels
- [x] File size: Under 100kB
- [x] Format: PNG with transparent background
- [x] No text or watermarks on the logo

**Project Mission:**
EfikCoin Eternal is a decentralized financial ecosystem built to empower individuals globally, especially in underserved regions. After years of development and multiple iterations, this is the final, immutable contract that embodies true decentralization and long-term value. The project features auto-liquidity, on-chain metadata, and a live Web3 interface for the community.

**Community & Transparency:**
- Contract verified on BscScan
- Liquidity locked via UNCX Network
- On-chain metadata updated with logo reference
- Active development and community engagement

**Fee Payment:** Ready to pay the 2.5 BNB processing fee as instructed by the merge-fee-bot upon PR creation.

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*This submission represents the culmination of years of work and a vision to bring decentralized finance to everyone. Thank you for your consideration.*

Author: Efikcoinofficialecosystem