Add exports field to fix webpack errors

[msujew]

Description

Adds a exports field to direct bundlers (mainly webpack) to the correct entry point. Having that entry in there is good practice anyway, and the other @inversifyjs/* packages already have an exports field.

Related Issue

#1616

Motivation and Context

I assume other people will have a similar issue when it comes to using webpack and CJS (i.e. require) of inversify.

How Has This Been Tested?

Applying this change to my local environment has fixed the issue reported in #1616.

Types of changes

• Updated docs / Refactor code / Added a tests case (non-breaking change)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have updated the changelog.

[sdirix]

I tested the change locally on my system. It successfully fixes the issue in which webpack consumed inversify's esm build instead of commonjs although inversify was required.

[notaphplover]

Thank you so much ❤️

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.53%. Comparing base (b5053d4) to head (057d22b).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1617   +/-   ##
=======================================
  Coverage   99.53%   99.53%           
=======================================
  Files          50       50           
  Lines        1492     1492           
  Branches      189      189           
=======================================
  Hits         1485     1485           
  Misses          4        4           
  Partials        3        3           

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