Remove chrono

[Adam-Gleave]

Description of change

Removes the chrono crate.

I have also created a new time module in bee-common for getting local time and creating formatted strings, since the same code is used in a couple of different places.

Links to any relevant issues

#783 and #779.

Type of change

Choose a type of change, and delete any options that are not relevant.

• Bug fix (a non-breaking change which fixes an issue)

How the change has been tested

Run the node to ensure timestamps format correctly. The output shows as:

2021-10-19 13:18:54 bee_protocol::workers::message::payload    INFO  Running.

This is in the correct local time to me (UTC +1).

Change checklist

• I have followed the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have checked that new and existing unit tests pass locally with my changes
• I have updated the CHANGELOG.md, if my changes are significant enough

[Adam-Gleave]

Adding to #786.