fix: music module code smell (#1477)

The change contains small fixes for reported issues from code analyzer. 

Tested using local-demo server.

fix: refactor the pagination prefix and token processing (#1476)

Encapsulate pageTokenPrefix and paginationToken within a unified
PageToken class or utility functions to simplify and generalize
pagination logic.
Issue : The logic to validate and extract the pageToken from the request
is not standardized and has repetition for every case which makes it
error prone.

The change was already done for exporting release. 

This change adds generic methods to the StringPaginationToken class and
refactors the export playlist method.

feat: google music release importer (#1474)

The import function for Google music already currently import of
playlist only. The changes will add support for music releases if they
exist in the request.

Tested via demo-server locally.

Exporter added earlier -
#1469

feat: add recurring job id to job metadata, use it in GenericImporter (…

…#1475)

Add the `recurringJobId` field to `JobMetadata` and `PortabilityJob`
classes.
When present, it means the current job is part of a recurring transfer
series, all sharing the same id.

When present, pass it in `X-DTP-Recurring-Job-Id` HTTP header from
`Generic*Importer` classes -- similarly to `X-DTP-Job-Id` header
introduced in #1473.

feat: pass export service and jobid as HTTP headers in generic import…

…er (#1473)

Add 2 HTTP headers to `GenericImporter` and `GenericFileImporter`:
- `X-DTP-Export-Service`, passing the `ExportService` from the
`JobMetadata`, i.e. the source of data;
- `X-DTP-Job-Id`, passing the current job UUID as String.

This will help the receiving service in building the internal logic
(i.e. if they want to know which service is sending the data).

TODO:
- [x] this PR: figure out tests (what is the currently recommended
workflow with testing?)
- [ ] next PR: add an optional `recurringJobId` field to
`PortabilityJob` (populated from `*JobStore`) and `JobMetadata` -- to be
sent for recurring transfers only via `X-DTP-Recurring-Job-Id`

feat: google music release exporter (#1469)

Enables the support for exporting music releases from Google.

feat: Add uploadedtime propertyp to track media upload timestamps in …

…Synology Importer. (#1468)

Co-authored-by: amychen <[email protected]>

fix: Add IPV4 Range Filtering for Backblaze B2 API Integration (#1467)

Currently the B2 Native API only supports IPV4 and Facebook requires
IPV6. This change forces an IPV4 DNS resolution when looking up the B2
Authorize endpoint DNS.

This change was tested locally by running the BackblazeIntegrationTest
while setting `java.net.preferIPv6Addresses=true`

```
BUILD SUCCESSFUL in 1s
24 actionable tasks: 2 executed, 22 up-to-date
INFO 2025-07-25T12:07:22.601918-05:00 Region extracted from s3ApiUrl: us-east-005
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
DEBUG 2025-07-25T12:07:22.961639-05:00 Uploading 'test-upload-1753463242960' with file size 14 bytes
```

feat: Add Synology Photos Importer extensions (#1461)

The Synology Photos application is a useful tool for photo and album
management, designed to operate on the DiskStation Manager (DSM) of
Synology NAS devices. Due to most NAS systems being behind NAT and not
accessible publicly, Synology offers a cloud service that acts as an
intermediary. This service facilitates the transfer of data from various
DTP extensions to the Synology cloud, from which users can subsequently
download their data to their NAS.

This PR includes:
- Synology Photos Importer
- Synology Videos Importer
- Synology Media Importer

---------

Co-authored-by: simonyeh <[email protected]>
Co-authored-by: ehung <[email protected]>
Co-authored-by: amychen <[email protected]>

fix: Test Maven central release (#1466)