ls shell-like wildcards

[jsuchan-reef]

requires reef-technologies/b2-sdk-python#302 to be merged first

Since this task is quite big, I split it into multiple PRs

Changes ls

• Drop --recursive option in b2 ls.
• Make b2 ls show an error and exit with non-0 status code if the directory doesn’t exist.
• Allow *, **, ? ,[] ,{} globs/patterns in b2 ls, globbing should work similarly to bash globs. Allow escaping special symbols with backslash \.
• Allow using more conventional -l flags with b2 ls

Changes rm

• Make b2 rm show an error and exit with non-0 status code if the directory doesn’t exist.
• Allow using more conventional -r, with b2 rm.
• Allow *, **, ?, [] ,{} globs/patterns in b2 rm, globbing should work similarly to bash globs. Allow escaping special symbols with backslash \.

[mjurbanski-reef]

we have opted for a different behavior, and it has been since already implemented & merged to upstream