feature(zjow): Add log module the "Traffic"

[zjowowen]

A light log module "Traffic" is introduced based on pandas.

[codecov[bot]]

Codecov Report

Merging #324 (139db18) into main (fa06b1b) will increase coverage by 0.69%. The diff coverage is 88.42%.

:exclamation: Current head 139db18 differs from pull request most recent head f117068. Consider uploading reports for the commit f117068 to get more accurate results

@@            Coverage Diff             @@
##             main     #324      +/-   ##
==========================================
+ Coverage   86.25%   86.94%   +0.69%     
==========================================
  Files         484      502      +18     
  Lines       36946    38291    +1345     
==========================================
+ Hits        31867    33294    +1427     
+ Misses       5079     4997      -82     

Flag	Coverage Δ
unittests	86.94% <88.42%> (+0.69%)	:arrow_up:

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Impacted Files	Coverage Δ
ding/config/tests/test_config_formatted.py	100.00% <ø> (ø)
ding/data/buffer/__init__.py	100.00% <ø> (ø)
ding/entry/main.py	0.00% <0.00%> (ø)
ding/policy/r2d2.py	89.87% <ø> (-0.07%)	:arrow_down:
ding/torch_utils/__init__.py	100.00% <ø> (ø)
ding/utils/data/dataset.py	69.49% <ø> (+0.32%)	:arrow_up:
ding/worker/__init__.py	100.00% <ø> (ø)
ding/torch_utils/data_helper.py	81.30% <27.27%> (-3.01%)	:arrow_down:
...ework/middleware/functional/termination_checker.py	31.25% <31.25%> (ø)
ding/policy/policy_factory.py	67.56% <33.33%> (-7.44%)	:arrow_down:
... and 93 more

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