* Remove trailing whitespaces
* Format code to fit module conventions
* Add appropriate new lines between imports, classes, fn defs, etc
* Added comments, docstrings & module headers

- remove several unnecessary comprehensions from functions that accept a generator.
- Using `[x for x in iter]` causes a list to be built first then passed to the outer function.
- `any` and `all` can take generator instead. This makes memory usage O(1) and actually makes these functions short-circuiting. E.g. if the first condition fails then `all` will immediately return false instead of evaluating all the entries.
- `sum`, `min`, `max` => memory usage become O(1)
- `list`, `set`, `.join()` => roughly halves memory usage, as list is not required to be built.
- lastly, it's two fewer characters to read/think about.

* Add PDW for --as-dict in command set-config
* Move all top level imports inside each util to optimize imports for
  CLI
* Set always show filter for DeprecationWarning, PendingDeprecationWarning via frappe module

(cherry picked from commit bf9fcb3)

---

Conflicts Resolved. 1 Pending

Depends on https://github.com/frappe/frappe/pull/13125

`assertEquals` has been deprecated, while not fully removed it will
still keep giving warnings in tests / CI.

ref: https://docs.python.org/3/library/unittest.html#deprecated-aliases

(cherry picked from commit 3b34474f8d)

# Conflicts:
#	frappe/tests/test_commands.py

(cherry picked from commit 520143d43a)

* Add PDW for --as-dict in command set-config
* Move all top level imports inside each util to optimize imports for
  CLI
* Set always show filter for DeprecationWarning, PendingDeprecationWarning via frappe module

Default site can now be set using the environment variable FRAPPE_SITE
An attempt to deprecate the use of currentsite.txt

* in fetch_latest_backups whitelisted API
* BackupGenerator.get_recent_backup

(cherry picked from commit cb44492feb)

# Conflicts:
#	frappe/tests/test_commands.py

tx @surajshetty3416

* Added utils for coloured outputs
* Fixed bug during last branch update