Adding errors for state rent change

[ilblackdragon]

At this point, keep old errors and just add new ones.

[gitpod-io]

[lexfrl]

You need to change
https://github.com/nearprotocol/nearlib/blob/master/gen_error_types.js#L7-L9
to the revision with the new rpc_errors_schema.json and then run to generate new types for errors:
yarn gen_error_types.js

And then yarn build to build lib/**.js files.

[ilblackdragon]

@fckt
yarn gen_error_types.js doesn't work:

$ ls -lh gen_error_types.js                                                                                                  
rw-r--r--  1 cypress  staff   2.4K Mar 18 09:06 gen_error_types.js
$ yarn gen_error_types.js
yarn run v1.21.0
error Command "gen_error_types.js" not found.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[ilblackdragon]

Added README.md how to update the error types.

[ilblackdragon]

Closing this, instead using #270