fix: use npm install (#77)

node_modules/@actions/exec/lib/exec.d.ts

@@ -0,0 +1,24 @@
+import { ExecOptions, ExecOutput, ExecListeners } from './interfaces';
+export { ExecOptions, ExecOutput, ExecListeners };
+/**
+ * Exec a command.
+ * Output will be streamed to the live console.
+ * Returns promise with return code
+ *
+ * @param     commandLine        command to execute (can include additional args). Must be correctly escaped.
+ * @param     args               optional arguments for tool. Escaping is handled by the lib.
+ * @param     options            optional exec options.  See ExecOptions
+ * @returns   Promise<number>    exit code
+ */
+export declare function exec(commandLine: string, args?: string[], options?: ExecOptions): Promise<number>;
+/**
+ * Exec a command and get the output.
+ * Output will be streamed to the live console.
+ * Returns promise with the exit code and collected stdout and stderr
+ *
+ * @param     commandLine           command to execute (can include additional args). Must be correctly escaped.
+ * @param     args                  optional arguments for tool. Escaping is handled by the lib.
+ * @param     options               optional exec options.  See ExecOptions
+ * @returns   Promise<ExecOutput>   exit code, stdout, and stderr
+ */
+export declare function getExecOutput(commandLine: string, args?: string[], options?: ExecOptions): Promise<ExecOutput>;