no default read of the configFile and paramsFile, persistence of these files removed

[g11tech]

Motivation
PR removes default reading of the configFile and paramsFile files without explicit flags. also when flags provided but files don't exists logs error onto the terminal to bring it to the user attentions as follows:

Description

partially closes #2983
Steps to test or reproduce

[codeclimate]

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[dapplion]

Thanks for the PR! If the user provided a flag for a file and the file is not found, the CLI must error and stop, not show an error and continue.

Also please check CI, type errors

[g11tech]

Thanks for the PR! If the user provided a flag for a file and the file is not found, the CLI must error and stop, not show an error and continue.

Also please check CI, type errors

@dapplion understood for cli to throw error.
e2e test cases that are failing are where we init (init.test.ts), and then test the beacon config file options that are written. these test cases won't make sense in the new scheme. should i just remove them for now and later figure out a way to test the executed configuration?

[g11tech]

or we dump the options like before (in a separate beaon.config.dump.json, network.params.dump.yml , just to inspect/run test cases against them)

[codecov]

Codecov Report

Merging #3073 (1de5119) into master (1ad9929) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 1de5119 differs from pull request most recent head 511fd58. Consider uploading reports for the commit 511fd58 to get more accurate results

@@            Coverage Diff             @@
##           master    #3073      +/-   ##
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- Coverage   59.15%   59.09%   -0.06%     
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  Files         377      377              
  Lines        9066     9065       -1     
  Branches     1336     1334       -2     
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- Hits         5363     5357       -6     
- Misses       3320     3325       +5     
  Partials      383      383              

[dapplion]

Looks great thanks!