feat: initialize azure-acme-provisioner project with core functionality

- Add package.json for project metadata and dependencies
- Implement CLI in src/cli.ts for managing SSL/TLS certificates
- Create Azure Functions host configuration in src/function/host.json
- Set up timer function in src/function/index.ts for scheduled certificate management
- Define configuration loading and error handling in src/lib/config.ts
- Implement DNS zone scanning and challenge management in src/lib/dns.ts
- Develop ACME client for certificate issuance in src/lib/acme.ts
- Create KeyVault store for managing secrets and certificates in src/lib/keyvault.ts
- Implement provisioning logic in src/lib/provisioner.ts for issuing and renewing certificates
- Add TypeScript configuration files for building the project

.gitignore

@@ -0,0 +1,27 @@
+node_modules/
+dist/
+*.tsbuildinfo
+
+*.log
+npm-debug.log*
+
+coverage/
+.nyc_output/
+
+.vscode/
+.idea/
+*.swp
+*.swo
+.DS_Store
+
+local.settings.json
+
+*.pem
+*.pfx
+*.p12
+*.crt
+*.key
+*.cer
+
+tmp/
+temp/