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

Dockerfile

@@ -0,0 +1,27 @@
+FROM node:24-alpine AS builder
+WORKDIR /app
+
+COPY package*.json tsconfig*.json ./
+RUN npm ci --ignore-scripts
+
+COPY src/ ./src/
+RUN npm run build
+
+RUN npm ci --omit=dev --ignore-scripts
+
+
+FROM node:24-alpine AS runtime
+WORKDIR /app
+
+RUN addgroup -S acme && adduser -S acme -G acme
+
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/package.json ./package.json
+
+USER acme
+
+ENV NODE_ENV=production
+
+ENTRYPOINT ["node", "dist/cli.js"]
+CMD ["run"]