Support the NOVALUES option of HSCAN

[gerzse]

Description

Issue #2705

The NOVALUES option instructs HSCAN to only return keys, without their values.
The new option will become available from Redis 7.6.

Checklist

• Does npm test pass with this change (including linting)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?

[leibale]

@gerzse arguments that change the reply type should be implemented as their own command, see HRANDFIELD_COUNT and HRANDFIELD_COUNT_WITHVALUES for example.

For this command, we should have:

1. HSCAN/hScan
2. HSCAN_NOVALUES/hScanNoValues
3. hScanIterator
4. hScanNoValuesIterator

[gerzse]

@gerzse arguments that change the reply type should be implemented as their own command, see HRANDFIELD_COUNT and HRANDFIELD_COUNT_WITHVALUES for example.

For this command, we should have:

1. HSCAN/hScan
2. HSCAN_NOVALUES/hScanNoValues
3. hScanIterator
4. hScanNoValuesIterator

@leibale Got it, thanks! Makes sense, the same is done in other clients too. I'll adapt the code.