feat: update linting and project configuration

- Added Babel config to support modern JavaScript features with Node.js compatibility
- Expanded ESLint ignore patterns to exclude test fixtures, reports, and generated files
- Relaxed ESLint rules by disabling no-unused-vars and changing no-undef to warning
- Added detailed ESLint overrides for different file types (tests, mocks, production code)
- Added .gitattributes to enforce LF line endings and handle binary files
- Added CODEOWNERS file to define code

Author: alikahwaji

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": [["@babel/preset-env", { "targets": { "node": "current" } }]]
+}

.eslintignore

@@ -1,5 +1,37 @@
-node_modules
-docs-site
-public
-dist
-coverage
+node_modules/
+coverage/
+dist/
+
+# test data & helper directories (not actual tests)
+__tests__/fixtures/
+__tests__/mocks/
+__tests__/utils/
+__tests__/__temp__/
+
+# misc generated / local scripts
+*.coverage.*
+*.tmp
+*.log
+
+# (optional) temporarily exclude large subsystems; re-enable incrementally
+# src/dag/**
+# src/observability/**
+# scripts/
+
+coverage/**
+dist/**
+docs-site/.docusaurus/**
+docs-site/build/
+pipelines/**
+test-results-current.json
+ci-reports/**
+performance-reports/**
+profiling-reports/**
+e2e-reports/**
+comprehensive-security-reports/**
+security-reports/**
+.artifacts/
+__tests__/fixtures/**
+**/-backup.js
+**/.backup.js
+**/*.bak