feat: support v2 volume expansion #8022 (backport #3949)

[mergify]

Which issue(s) this PR fixes:

longhorn/longhorn#8022

What this PR does / why we need it:

Special notes for your reviewer:

Additional documentation or context

Corresponding PR :
longhorn/types#57
longhorn/longhorn-spdk-engine#386
longhorn/go-spdk-helper#224
longhorn/longhorn-instance-manager#1036

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This is an automatic backport of pull request #3949 done by [Mergify](https://mergify.com).

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