changed the content structure in CODE_OF_CONDUCT.md

Co-authored-by: Zack Koppert <zkoppert@github.com>

Bump Code of Conduct version from 1.4 to 2.1

## Changelog

Since 2.0
- Emphasizes 'community' over 'project' scope, effectively merging the Community Covenant into the Contributor Covenant
- Adds expectation about accepting responsibility and apologizing to those affected by mistakes, and learning from the experience to the list
- Adds sexual attention and advances of any kind as unacceptable behavior example
- Moves enforcement responsibilities from project maintainers to community leaders
- Adds responsibility to communicate reasons for moderation decisions when removing, editing, or rejecting contributions not aligned to the Code of Conduct
- Requires community leaders to respect privacy and security of the reporter of any incident, not just confidentiality
- Provides a template for code of conduct enforcement

Since 2.1
- Adds 'caste' and 'color' to the preamble

https://www.contributor-covenant.org/version/2/1/code_of_conduct/code_of_conduct.md

Add period to list item

Updating the link for the Safe Harbor Policy

Allow CODEOWNERS file detection to see into the .github directory

The old link is broken, this is updating the link to the current Safe Harbor Policy

To reduce spam

Updating security.md file

Update SECURITY.md

Create SECURITY.md

Creating an org-wide security policy based upon the Bug Bounty program definition.

Add link to corresponding help.github.com article