[feature request]upgrade NodePool CRD to v1beta2

[rambohe-ch]

What would you like to be added:
According to the following proposal, NodePool CRD will be upgraded to new version: v1beta2.

The new fields should be added to spec and status of NodePool API as following:

// NodePoolSpec defines the desired state of NodePool
type NodePoolSpec struct {
         ...

	// InterConnectivity represents all nodes in the NodePool can access with each other
	// through Layer 2 or Layer 3 network or not. If the field is true,
	// nodepool-level list/watch requests reuse can be applied for this nodepool.
	// otherwise, only node-level list/watch requests reuse can be applied for the nodepool.
	// This field is not supported to change after creation.
	InterConnectivity bool `json:"interConnectivity,omitempty"`

	// LeaderElectionStrategy represents the policy how to elect a leader Yurthub in a nodepool.
	// random: select one ready node as leader at random.
	// mark: select one ready node as leader from nodes that are specified by labelselector.
	// More strategies will be supported according to user's new requirements.
	LeaderElectionStrategy string `json:"leaderElectionStrategy,omitempty"`

	// LeaderNodeLabelSelector is used only when LeaderElectionStrategy is mark. leader Yurhub will be
	// elected from nodes that filtered by this label selector.
	LeaderNodeLabelSelector map[string]string `json:"leaderNodeLabelSelector,omitempty"`

	// PoolScopeMetadata is uesed for specifying resouces which will be shared in the nodepool.
	// And it is supported to modify dynamically. and the default value is v1.Service and discovery.Endpointslice.
	PoolScopeMetadata []metav1.GroupVersionKind `json:"poolScopeMetadata,omitempty"`
}

// NodePoolStatus defines the observed state of NodePool
type NodePoolStatus struct {
         ...

	// LeaderEndpoints is used for storing the address of Leader Yurthub.
	// +optional
	LeaderEndpoints []string `json:"leaderEndpoints,omitempty"`

	// Conditions represents the latest available observations of a NodePool's
	// current state that includes LeaderHubElection status.
	// +optional
	Conditions []NodePoolCondition `json:"conditions,omitempty"`
}

type NodePoolCondition struct {
	// Type of NodePool condition.
	Type NodePoolConditionType `json:"type,omitempty"`
	// Status of the condition, one of True, False, Unknown.
	Status v1.ConditionStatus `json:"status,omitempty"`
	// Last time the condition transitioned from one status to another.
	LastTransitionTime metav1.Time `json:"lastTransitionTime,omitempty"`
	// The reason for the condition's last transition.
	Reason string `json:"reason,omitempty"`
	// A human readable message indicating details about the transition.
	Message string `json:"message,omitempty"`
}

type NodePoolConditionType string

const (
	// LeaderReady means the status of leader yurthub election.
	// If it's true, a Leader Yurthub is elected, otherwise no leader is elected.
	LeaderHubReady NodePoolConditionType = "LeaderReady"
  )

https://github.com/openyurtio/openyurt/blob/master/docs/proposals/20241211-reuse-nodepool-list-watch-requests.md#api-changes

others
/kind feature

[rambohe-ch]

we also need to update nodepool mutate wehbook and get rid of modifying InterConnectivity field.

[tnsimon]

/assign @tnsimon