Function KeyPair.fromSeed
Create a keypair from a SecretKey
Example
immutable seedStr = `SDV3GLVZ6W7R7UFB2EMMY4BBFJWNCQB5FTCXUMD5ZCFTDEVZZ3RQ2BZI`;
KeyPair kp = KeyPair .fromSeed(SecretKey .fromString(seedStr));
assert(kp .secret .toString(PrintMode .Clear) == seedStr,
kp .secret .toString(PrintMode .Clear));