`key: ['value', 'value2']` is turned into `key: 'value'` for no reason

json_handler

* Added utils parse_timedelta, format_timedelta
* Added to json_handler for de-serializing timedelta objects

Co-authored-by: Himanshu <himanshuwarekar@yahoo.com>

fix!: Misc fixes

fix: Add patch to remove chat related doctypes

add .gitkeep file so that public folder is committed to git this is
needed because if public doesn't exist, bench build doesn't
symlink the public folder to sites/assets

Added translation connected to: https://github.com/frappe/frappe/pull/15669

* Avoid double save if possible - seemed like it was added mistakenly,
  didnt find enough evidence for it's addition
* Avoid json.loads breaking if "" was passed for attachments

Prior to this, no tracebacks were logged and the body of the log only
had what was supposed to be the title

This was going to be a fix at first. Until I realised it couldn't...so I
removed the changes and kept the things back that helped me debug the
issue

fix: Show image in sidebar in mobile view

#15334 added a change where all exceptions are caught when a server
script is executed, which makes validation errors useless. reverting this
for now, until we find a better solution.

* fix: S3 automatic backup fails when the backup folder is empty

* Removed conditional that returns early when
`file_path` argument is invalid i.e `None` or empty string.

This means though that the function will throw an exception if it
receives such invalid input so devs should check their inputs before
calling the function

Co-authored-by: Mohammad Hasnain Mohsin Rajan <hasnain2808@gmail.com>

Co-authored-by: Mohammad Hasnain Mohsin Rajan <hasnain2808@gmail.com>

feat: get_count, get_stats for virtual doctype

fix: ignore empty `patches.txt` file

fix: Remove salutation from email composer

feat: Workspace 2.0 new design 🎉

fix(User Type): Select perms not updated for link fields in child table

fix(Customize Form): delete translation for renaming only if label is empty

test: flaky report_view UI test fix

Ability to run a few patches after the doctype model schema is synced.

Read module-level docstring of patch_handler.py for more info.

Reasons:
- It shows up only when few conditons (which are not very clear) are met. Since the behaviour is not consistent it creates unnecessary confusion
- Salutations are not configurable. Not all users want to start their email with "Dear" in which case they have to clear it first.