Add a new export type

Purpose/Overview:

Add a new export type: 

1. BATCH_VOUCHER_EXPORT
2. EDIFACT_ORDERS_EXPORT
3. ORDERS_EXPORT
4. INVOICE_EXPORT

Write a migration for change ExportType (see the example in the attached files)

Organize the changelogs as in the example: https://www.liquibase.org/get-started/best-practices

Requirements/Scope:

Approach:

Add to src/main/resources/swagger.api/schemas/exportType.json new enums  type:

• BATCH_VOUCHER_EXPORT
• EDIFACT_ORDERS_EXPORT
• ORDERS_EXPORT
• INVOICE_EXPORT

Acceptance criteria:

• Added a new type
• Wrote migration