Fixes #11885 Add support for WalletMatrix

[dcentrica]

Adds an informational meta-file about your wallet's features for auto-import into walletmatrix.app. See #11885

[codecov[bot]]

Codecov Report

Merging #11896 (7308cb3) into master (1b95b42) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #11896   +/-   ##
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  Coverage   28.63%   28.63%           
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  Files         244      244           
  Lines       21975    21975           
  Branches     3550     3550           
=======================================
  Hits         6293     6293           
  Misses      15135    15135           
  Partials      547      547           

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