Add OpenSSF Baseline compliance files

[mlieberman85]

Summary

This PR adds files required for OpenSSF Baseline compliance at Levels 1-3.

Changes

• CODEOWNERS - Defines code ownership (@mlieberman85, @pxp928, @funnelfiasco)
• MAINTAINERS.md - Documents project maintainers and responsibilities
• GOVERNANCE.md - Establishes project governance model
• SUPPORT.md - Provides support channels and resources
• Bug report template - Standardized issue template for bug reports
• SECURITY.md - Updated with VEX policy section
• DCO enforcement - Workflow for Developer Certificate of Origin
• dependabot.yml - Updated dependency scanning configuration

Controls Addressed

Control	Description
OSPS-GV-01.01	Governance documentation
OSPS-GV-01.02	Maintainer documentation
OSPS-GV-04.01	Code ownership
OSPS-DO-02.01	Bug report template
OSPS-DO-03.01	Support documentation
OSPS-VM-04.02	VEX policy
OSPS-LE-01.01	DCO enforcement

Verification

Re-run the OpenSSF Baseline audit after merging to verify compliance improvements.