Fixes part of #1433: Rename the logger class to consoleLogger

[vinitamurthi]

Explanation

With the new forms of firebase logging coming up, we would like app/domain module files to use all logging functionality from a single logger. This PR starts the work of it. See the issue for details on how we intend to restructure it.
Fixes part of #1433

Checklist

• The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• The PR explanation includes the words "Fixes #bugnum: ..." (or "Fixes part of #bugnum" if the PR only partially fixes an issue).
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• The PR is made from a branch that's not called "develop".
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[rt4914]

LGTM

[Sarthak2601]

LGTM. Just one suggestion, shouldn't we rename the variable name to consoleLogger as well ? I think It would make files more readable in cases where multiple logging scenarios(console/event/exception) exist in the same file.

[anandwana001]

LGTM, just one thing to confirm this is updated with our yesterday's ktlint app module check merge.

[vinitamurthi]

LGTM. Just one suggestion, shouldn't we rename the variable name to consoleLogger as well ? I think It would make files more readable in cases where multiple logging scenarios(console/event/exception) exist in the same file.

The whole goal is to remove multiple logging scenarios :) Hence I am not changing the name. Eventually we will be replacing the consoleLogger with OppiaLogger in the app and domain modules, so I dont want to change variable names right now

[vinitamurthi]

LGTM, just one thing to confirm this is updated with our yesterday's ktlint app module check merge.

Yep I updated the branch