Respect default branch setting when creating a new repository

app/src/lib/git/init.ts

@@ -1,6 +1,11 @@
+import { getDefaultBranch } from '../helpers/default-branch'
 import { git } from './core'
 
 /** Init a new git repository in the given path. */
 export async function initGitRepository(path: string): Promise<void> {
-  await git(['init'], path, 'initGitRepository')
+  await git(
+    ['-c', `init.defaultBranch=${await getDefaultBranch()}`, 'init'],
+    path,
+    'initGitRepository'
+  )
 }