package.json: add cloud SDKs as devDependencies so build/tests work locally

These packages are also declared as optional peerDependencies (the fork's
slim-install pattern). Listing them in devDependencies as well means:
- Local dev / CI: `npm install` pulls them in, so TypeScript compilation
  resolves their types and tests that exercise S3/Azure/GCP code paths
  can run.
- Consumers installing @naturalcycles/snowflake-sdk: they remain optional
  peers — npm does not install them unless the consumer opts in.

Also pin agent-base ^7.1.0 as a direct dependency to override the older
6.x copy that axios's transitive https-proxy-agent@5 hoists to the top
level, which broke `lib/agent/https_proxy_agent.ts` (needs the v7 API).

Author: kirillgroshkov

package.json

@@ -7,6 +7,7 @@
   },
   "dependencies": {
     "@techteamer/ocsp": "1.0.1",
+    "agent-base": "^7.1.0",
     "asn1.js-rfc2560": "^5.0.0",
     "asn1.js-rfc5280": "^3.0.0",
     "axios": "^1.15.1",
@@ -28,12 +29,23 @@
     "winston": "^3.1.0"
   },
   "devDependencies": {
+    "@aws-crypto/sha256-js": "^5.2.0",
+    "@aws-sdk/client-s3": "~3.1045.0",
+    "@aws-sdk/client-sts": "~3.1045.0",
+    "@aws-sdk/credential-provider-node": "~3.972.37",
+    "@aws-sdk/ec2-metadata-service": "~3.1045.0",
     "@aws-sdk/types": "~3.973.8",
+    "@azure/identity": "^4.10.1",
+    "@azure/storage-blob": "12.26.x",
     "@napi-rs/cli": "^3.2.0",
+    "@smithy/node-http-handler": "^4.4.9",
+    "@smithy/protocol-http": "^5.3.8",
+    "@smithy/signature-v4": "^5.3.8",
     "@types/mocha": "^10.0.10",
     "@types/node": "^22.15.18",
     "@types/sinon": "^17.0.4",
     "async": "^3.2.3",
+    "google-auth-library": "^10.1.0",
     "husky": "^9.1.7",
     "oxlint": "^1.43.0",
     "lint-staged": "^16.0.0",