Remove make-fetch-happen and replace with native fetch (#956)

* removed make-fetch-happen

* removed make-fetch-happen from cli package

* removed last instance of make-fecth-happen

* added changesets

* cleaned up leftover code from troubleshooting

* fixed timeout test

* fixed formatting issues

Author: odehamer

.changeset/cuddly-signs-bet.md

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+---
+'@tufjs/cli': minor
+---
+
+Replace make-fetch-happen with native fetch

.changeset/cute-nights-crash.md

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+---
+'tuf-js': major
+---
+
+Replace make-fetch-happen with native fetch