Add cloud_api_client and cloud_api_types crates (#35357)

This PR adds two new crates for interacting with Cloud:

- `cloud_api_client` - The client that will be used to talk to Cloud.
- `cloud_api_types` - The types for the Cloud API that are shared
between Zed and Cloud.

Release Notes:

- N/A

Cargo.lock

@@ -2976,6 +2976,7 @@ dependencies = [
  "base64 0.22.1",
  "chrono",
  "clock",
+ "cloud_api_client",
  "cloud_llm_client",
  "cocoa 0.26.0",
  "collections",
@@ -3031,6 +3032,27 @@ dependencies = [
  "workspace-hack",
 ]
 
+[[package]]
+name = "cloud_api_client"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "cloud_api_types",
+ "futures 0.3.31",
+ "http_client",
+ "parking_lot",
+ "serde_json",
+ "workspace-hack",
+]
+
+[[package]]
+name = "cloud_api_types"
+version = "0.1.0"
+dependencies = [
+ "serde",
+ "workspace-hack",
+]
+
 [[package]]
 name = "cloud_llm_client"
 version = "0.1.0"