CHEF-26004 - Replace CODE_OF_CONDUCT.md file

[Saburesh07]

As part of the repo standardization effort we are standardizing all repos to have a standard CODE_OF_CONDUCT.md file that points to the main Chef Code of Conduct. This is not intended to be a change in policy, but rather an administrative change.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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