Implement T8L2/remote-branch-pull-new (#285)

# Exercise Review

## Exercise Discussion
Fixes #270

Link the exercise discussion issue
[Link to issue](#270)

## Notes for Reviewers
- Added a utility function `delete_remote_tracking_branch_locally` in
`exercise_utils/git.py` just to follow standard. Understand if that
function has limited reusability and can change to write `run_command`
directly in `remote_branch_pull_new.py`

## Checklist

- [ ] If you require a new remote repository on the `Git-Mastery`
organization, have you [created a
request](https://github.com/git-mastery/exercises/issues/new?template=request_exercise_repository.yaml)
for it?
- [ ] Have you written unit tests using
[`repo-smith`](https://github.com/git-mastery/repo-smith) to validate
the exercise grading scheme?
- [x] Have you tested your changes using the instructions posted?
- [x] Have you verified that this exercise does not already exist or is
not currently in review?
- [ ] Did you introduce a new grading mechanism that should belong to
[`git-autograder`](https://github.com/git-mastery/git-autograder)?
- [ ] Did you introduce a new dependency that should belong to
[`app`](https://github.com/git-mastery/app)?

---------

Co-authored-by: jovnc <95868357+jovnc@users.noreply.github.com>

Author: curtischang2510

hands_on/remote_branch_pull_new.py

@@ -0,0 +1,34 @@
+import os
+
+from exercise_utils.git import remove_remote, run_command, track_remote_branch
+from exercise_utils.github_cli import (
+    clone_repo_with_gh,
+    delete_repo,
+    fork_repo,
+    get_github_username,
+    has_repo,
+)
+
+__requires_git__ = True
+__requires_github__ = True
+
+TARGET_REPO = "git-mastery/samplerepo-company-2"
+FORK_NAME = "gitmastery-samplerepo-company-2"
+LOCAL_DIR = "samplerepo-company"
+
+
+def download(verbose: bool):
+    username = get_github_username(verbose)
+    full_repo_name = f"{username}/{FORK_NAME}"
+
+    if has_repo(full_repo_name, True, verbose):
+        delete_repo(full_repo_name, verbose)
+
+    fork_repo(TARGET_REPO, FORK_NAME, verbose, False)
+    clone_repo_with_gh(full_repo_name, verbose, LOCAL_DIR)
+
+    os.chdir(LOCAL_DIR)
+
+    remove_remote("upstream", verbose)
+    track_remote_branch("origin", "track-sales", verbose)
+    run_command(["git", "branch", "-dr", "origin/track-sales"], verbose)