Make Velero hook annotations configurable

[a-vorobiev]

Preflight Checklist

• I have searched the issue tracker for an issue that matches the one I want to file, without success.
• I agree to follow the Code of Conduct.

Problem Description

Currently Velero hook annotations use hardcoded path /vault/file for fsfreeze:

vault-operator/pkg/controller/vault/vault_controller.go

Lines 1417 to 1422 in 661263a

	veleroAnnotations := map[string]string{
	"pre.hook.backup.velero.io/container": "velero-fsfreeze",
	"pre.hook.backup.velero.io/command": "[\"/sbin/fsfreeze\", \"--freeze\", \"/vault/file/\"]",
	"post.hook.backup.velero.io/container": "velero-fsfreeze",
	"post.hook.backup.velero.io/command": "[\"/sbin/fsfreeze\", \"--unfreeze\", \"/vault/file/\"]",
	}

It is not possible to override these annotations with the vaultAnnotations, so there is no way to customize path for fsfreeze.

Proposed Solution

Make veleroAnnotations a part of custom resource with current value as a default.

Alternatives Considered

Get path from provided Vault configuration.

Additional Information

No response