Establish Open Source Relevant Documents

[dotacow]

• for esp-csi-rs and relevant child repositories:
  • GOVERNANCE.md
  • CONTRIBUTING.md
  • AGENTS.md
  • Issue Templates
  • PR Templates
  • CODEOWNERS

[Abusalah0]

WIP.

[dotacow]

@Abusalah0 I've transferred this issue from esp-csi-rs to .github