Added BDDs for Attestation Manager

...station-manager/credentialDef/createCredentialDef.feature

...testation-manager/credentialDef/findCredentialDef.feature

...ation-manager/credentialDef/findCredentialDefById.feature

...on-manager/issue-credential/acceptOfferCredential.feature

...ion-manager/issue-credential/createCredentialType.feature

...on-manager/issue-credential/createOfferCredential.feature

...ttestation-manager/issue-credential/getCredential.feature

...anager/issue-credential/getCredentialsTypeDetails.feature

...ion-manager/issue-credential/getIssuedCredentials.feature

...nager/issue-credential/offerMemberShipCredentials.feature

...ion-manager/issue-credential/updateSchemaIdByType.feature

...ation-manager/issue-credential/webHookCredentials.feature

features/attestation-manager/schemas/createSchema.feature

features/attestation-manager/schemas/findSchemaById.feature

features/attestation-manager/schemas/findSchemas.feature

...ures/attestation-manager/schemas/getDidsForSchema.feature