Solana (phantom wallet) support

[XuJiandong]

Overall Procedure:

1. After receiving the transaction (tx), the dApp calculates the signing message hash (32 bytes).
2. The dApp calls the API at https://docs.phantom.app/solana/signing-a-message. The format of the signed string is as follows:

CKB transaction: 0x<signing message hash, in hexadecimal format>

For example:

CKB transaction: 0x0011223344556677001122334455667700112233445566770011223344556677

3. The dApp combines the signature and pubkey together and fills in the signature field of OmniLockWitnessLock. The signature is 64 bytes, and the pubkey is 32 bytes, totaling 96 bytes. They have a specific order: the signature comes first, followed by the pubkey. Then, the dApp sends the tx to the p2p network.
4. During contract verification, the signature field of OmniLockWitnessLock is first obtained and parsed into two parts: signature and pubkey.
5. The blake160 hash of the pubkey is verified to match the 20-byte auth content. In solana, the 32 bytes pubkey can be decoded from address via base58. Unlike other blockchains, it's not an pubkey hash and can't be fit into 20 bytes auth content. So there is an blake160 hash on pubkey.
6. The contract calculates the signing message hash, converts it to hexadecimal format, and adds the prefix "CKB transaction: 0x ". This becomes the ed25519 message. Note that this message can be of any length and does not require hashing.
7. For the ed25519 message, signature, and pubkey, the ed25519 verify function is used. If the verification passes, the signature is successfully verified.

Other notes:

• The blake160 hash is the leading 20 bytes of blake2b hash with personalization: "ckb-default-hash".
• A Solana address is a straightforward base58 encoding of a 32-byte ed25519 public key. Unlike Bitcoin and Ethereum, no hashing is involved.
• Unlike secp256k1, an ed25519 signature cannot independently recover the public key. Therefore, both the signature and an additional public key are required for validation.

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Other changes:

• Optimize get_witness_layout
• Add test cases for cycles consuming