feat(provider): add repository actions variable resource

Closes #8

internal/client/repository_actions_variables.go

@@ -0,0 +1,58 @@
+package client
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"path"
+)
+
+type RepositoryActionsVariable struct {
+	Data    string `json:"data"`
+	Name    string `json:"name"`
+	OwnerId int64  `json:"owner_id"`
+	RepoId  int64  `json:"repo_id"`
+}
+
+func (c *Client) RepositoryActionsVariableCreate(ctx context.Context, owner string, repo string, name string, value string) error {
+	uriRef := url.URL{Path: path.Join("api/v1/repos", owner, repo, "actions/variables", name)}
+	type Payload struct {
+		Value string `json:"value"`
+	}
+	payload := Payload{Value: value}
+	if _, err := c.send(ctx, "POST", &uriRef, &payload, nil); err != nil {
+		return fmt.Errorf("failed to create repository actions variable: %w", err)
+	}
+	return nil
+}
+
+func (c *Client) RepositoryActionsVariableDelete(ctx context.Context, owner string, repo string, name string) (*RepositoryActionsVariable, error) {
+	uriRef := url.URL{Path: path.Join("api/v1/repos", owner, repo, "actions/variables", name)}
+	response := RepositoryActionsVariable{}
+	if _, err := c.send(ctx, "DELETE", &uriRef, nil, &response); err != nil {
+		return nil, fmt.Errorf("failed to delete repository actions variable: %w", err)
+	}
+	return &response, nil
+}
+
+func (c *Client) RepositoryActionsVariableGet(ctx context.Context, owner string, repo string, name string) (*RepositoryActionsVariable, error) {
+	uriRef := url.URL{Path: path.Join("api/v1/repos", owner, repo, "actions/variables", name)}
+	response := RepositoryActionsVariable{}
+	if _, err := c.send(ctx, "GET", &uriRef, nil, &response); err != nil {
+		return nil, fmt.Errorf("failed to get repository actions variable: %w", err)
+	}
+	return &response, nil
+}
+
+func (c *Client) RepositoryActionsVariableUpdate(ctx context.Context, owner string, repo string, oldName string, newName string, value string) error {
+	uriRef := url.URL{Path: path.Join("api/v1/repos", owner, repo, "actions/variables", oldName)}
+	type Payload struct {
+		Name  string `json:"name"`
+		Value string `json:"value"`
+	}
+	payload := Payload{Name: newName, Value: value}
+	if _, err := c.send(ctx, "PUT", &uriRef, &payload, nil); err != nil {
+		return fmt.Errorf("failed to update repository actions variable: %w", err)
+	}
+	return nil
+}