Restructure to handle multiple VcDataModels

[nitro-neal]

Restructure to handle VcDataModels

class W3CVerifiableCredentialV1 {
    static create() {
        // Implementation for creating a V1 verifiable credential
    }

    signJwt() {
        // Implementation for signing a JWT for a V1 verifiable credential
    }

    static verify() {
        // Implementation for verifying a V1 verifiable credential
    }
}

class W3CVerifiableCredentialV2 {
    static create() {
        // Implementation for creating a V2 verifiable credential
    }

    signJwt() {
        // Implementation for signing a JWT for a V2 verifiable credential
    }

    // Only 2.0 supports sdJwt
    signSdJwt() {
        // Implementation for signing a sdJwt for a V2 verifiable credential
    }

    static verify() {
        // Implementation for verifying a V2 verifiable credential
    }
}

// Type alias 'VerifiableCredential' referring to 'W3CVerifiableCredentialV2'
type VerifiableCredential = W3CVerifiableCredentialV2;