system requirements

[faddat]

Closes: #825

Description

This PR adds system requirements to the Readme.md file

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For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

[codecov-commenter]

Codecov Report

Merging #1010 (fc78086) into main (08b3bd6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1010   +/-   ##
=======================================
  Coverage   20.60%   20.60%           
=======================================
  Files         193      193           
  Lines       25237    25237           
=======================================
  Hits         5199     5199           
  Misses      19084    19084           
  Partials      954      954           

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[ValarDragon]

Thanks for adding this!