* Return 404 on not exist

* swagger update and use git.IsErrNotExist

* Handle delete too

* Handle delete too x2

* Fix pr 10323 (#3)

* fix TESTS

* leafe a note for fututre

* placate golangci-lint

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update integrations/api_repo_file_delete_test.go

Co-Authored-By: 6543 <6543@obermui.de>

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Antoine GIRARD <sapk@users.noreply.github.com>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>

* Move newbranch to standalone package

* move branch functions to modules to avoid dependencies cycles

* fix tests

* fix lint

* fix lint

In investigating #7947 it has become clear that the storage component of go-git repositories needs closing.

This PR adds this Close function and adds the Close functions as necessary.

In TransferOwnership the ctx.Repo.GitRepo is closed if it is open to help prevent the risk of multiple open files.

Fixes #7947