fix: add @typescript-eslint/consistent-type-imports rule and normalised all imports

[SmashingQuasar]

Description

This PR fixes #1991.

It does two separate things:

• Adds the @typescript-eslint/consistent-type-imports rule to force all imports used exclusively as types to be declared with the import type syntax. This will eliminate them at run time.
• Automatically converts all type imports as such by the eslint --fix feature.

This will solve the underlying problem as it will make @types/readable-stream and @types/ws true development dependencies instead of extraneous dependencies.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.46%. Comparing base (3c1f335) to head (26327ee).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1993   +/-   ##
=======================================
  Coverage   81.46%   81.46%           
=======================================
  Files          25       25           
  Lines        1565     1565           
  Branches      366      366           
=======================================
  Hits         1275     1275           
  Misses        199      199           
  Partials       91       91           

Flag	Coverage Δ
unittests	81.46% <100.00%> (ø)

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[robertsLando]

LGTM