upd cli

- added rpc tests
- removed git clone

cli/src/utils/cloner.ts

@@ -0,0 +1,24 @@
+import { exec } from 'child_process'
+
+export async function cloneBranch(link: string, path: string, branch: string) {
+    return new Promise((resolve, reject) => {
+        const args = ['--single-branch', '-b', branch, '--', link, path]
+        const proc = exec('git clone ' + args.join(' '))
+
+        proc.on('close', (status: number) => {
+            if (status == 0) {
+                resolve(true)
+            } else if (status == 128) {
+                reject(
+                    `Folder already exists. 'git clone' from branch ${branch} failed with status ` +
+                        status,
+                )
+            } else {
+                reject(
+                    `'git clone' from branch ${branch} failed with status ` +
+                        status,
+                )
+            }
+        })
+    })
+}