Console logging fixes (Colab + Windows/TF)

[farizrahman4u]

• Enables native IO redirect for console
• Fixes issue on Colab
• Fallback to stdout/err wrapping on Windows if TF is imported (otherwise TF freezes!)

[coveralls]

Pull Request Test Coverage Report for Build b0f51ced-381e-4936-a588-4c372b8bf50b

• 30 of 63 (47.62%) changed or added relevant lines in 3 files are covered.
• 107 unchanged lines in 23 files lost coverage.
• Overall coverage increased (+4.4%) to 64.781%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
wandb/sdk/wandb_settings.py	2	9	22.22%
wandb/sdk/wandb_run.py	6	14	42.86%
wandb/lib/redirect.py	22	40	55.0%
<!--	Total:	30	63	47.62%	-->

Files with Coverage Reduction	New Missed Lines	%
wandb/apis/internal_runqueue.py	1	25.0%
wandb/filesync/dir_watcher.py	1	81.62%
wandb/internal/internal_api.py	1	54.31%
wandb/internal/meta.py	1	72.39%
wandb/internal/run.py	1	61.54%
wandb/util.py	1	64.4%
tests/test_datastore.py	2	97.83%
tests/test_util.py	2	97.44%
tests/utils/notebook_client.py	2	72.22%
wandb/cli/cli.py	2	62.0%
<!--	Total:	107		-->

Totals
Change from base Build 0a472e0b-bedc-4c51-a135-e716ff9eb069:	4.4%
Covered Lines:	13578
Relevant Lines:	20960

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💛 - Coveralls