Add support page in README

[jonathanMindee]

No description provided.

[fharper]

@charlesmindee: I'm merging this PR, but seems like all images in the README are from the changelog of a release, so you had no img folder. I created one, but feel free to re-organize.

[fharper]

LGTM

[codecov]

Codecov Report

Merging #946 (391f5c6) into main (fddceba) will not change coverage.
The diff coverage is n/a.

❗ Current head 391f5c6 differs from pull request most recent head f69d1a2. Consider uploading reports for the commit f69d1a2 to get more accurate results

@@           Coverage Diff           @@
##             main     #946   +/-   ##
=======================================
  Coverage   94.83%   94.83%           
=======================================
  Files         134      134           
  Lines        5539     5539           
=======================================
  Hits         5253     5253           
  Misses        286      286           

Flag	Coverage Δ
unittests	94.83% <ø> (ø)

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[github-actions]

Hey @fharper 👋
You merged this PR, but it is not correctly labeled. The list of valid labels is available at https://github.com/mindee/doctr/blob/main/.github/verify_pr_labels.py