Add management of Cloud API Keys (#71)

Inspired from https://github.com/form3tech-oss/terraform-provider-grafanacloud

cloud_api_key.go

@@ -0,0 +1,45 @@
+package gapi
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+)
+
+type CreateCloudAPIKeyInput struct {
+	Name string `json:"name"`
+	Role string `json:"role"`
+}
+
+type ListCloudAPIKeysOutput struct {
+	Items []*CloudAPIKey
+}
+
+type CloudAPIKey struct {
+	ID         int
+	Name       string
+	Role       string
+	Token      string
+	Expiration string
+}
+
+func (c *Client) CreateCloudAPIKey(org string, input *CreateCloudAPIKeyInput) (*CloudAPIKey, error) {
+	resp := CloudAPIKey{}
+	data, err := json.Marshal(input)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.request("POST", fmt.Sprintf("/api/orgs/%s/api-keys", org), nil, bytes.NewBuffer(data), &resp)
+	return &resp, err
+}
+
+func (c *Client) ListCloudAPIKeys(org string) (*ListCloudAPIKeysOutput, error) {
+	resp := &ListCloudAPIKeysOutput{}
+	err := c.request("GET", fmt.Sprintf("/api/orgs/%s/api-keys", org), nil, nil, &resp)
+	return resp, err
+}
+
+func (c *Client) DeleteCloudAPIKey(org string, keyName string) error {
+	return c.request("DELETE", fmt.Sprintf("/api/orgs/%s/api-keys/%s", org, keyName), nil, nil, nil)
+}