docs: namespaces concepts page

[harry-hov]

Adds info about the namespaces and package/realm path.

[harry-hov]

Hey @leohhhn. I have added the basic info about namespaces and package/realm path. Didn't talked much about namespaces, because things are not finalised yet. Just included the link to the issue.

I don't know much about other blockchain systems. So can't add the comparison. Maybe you can take it from here 🙏

[leohhhn]

Thanks for this @harry-hov. I left some minor comments.

Please also include the namespaces file in the concepts section in misc/docusaurus/sidebars.js, and try to do yarn build & yarn start to see how the page looks when its deployed (and so that I can do that as well).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.34%. Comparing base (59c6d3e) to head (dffb722).
Report is 17 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1909      +/-   ##
==========================================
- Coverage   47.74%   45.34%   -2.41%     
==========================================
  Files         393      464      +71     
  Lines       61637    68416    +6779     
==========================================
+ Hits        29430    31021    +1591     
- Misses      29736    34804    +5068     
- Partials     2471     2591     +120     

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[thehowl]

good after changes