Add new faucet (ethfaucet.com)

[mikhaildobs]

New Faucet: Added documentation for ethfaucet.com as an additional source for obtaining Base Sepolia ETH and Base Mainnet ETH.

What changed? Why?
Included a new section describing ethfaucet.com, a new faucet operated by BringID.
This provides developers with another reliable option for claiming Base Sepolia ETH (0.5 ETH / 24h) and a one-time Base Mainnet ETH drip.

Notes to reviewers
Please verify the faucet logic (claim limits, balance checks, and request validation). Pay attention to the anti-abuse mechanisms (e.g : BringID anti-bot protection).

How has it been tested?
The faucet is operational and at the time of this PR there has been:

• 274 Base Sepolia ETH claims:https://sepolia.basescan.org/txs?a=0xE99ae3eE8d8C0dCF151613563c9E9f59Ff5730d4
• 686 Base Mainnet ETH claims: https://basescan.org/address/0x1F9Cb1cCD312d631559944A3B04Ac332251B5e8c

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1