Add pagination to search results.

Move to shared definition of json requests between client/server.

Cargo.lock

@@ -1185,6 +1185,7 @@ dependencies = [
  "seed",
  "serde",
  "serde_json",
+ "shared",
  "wasm-bindgen-test",
  "wasm-timer",
  "web-sys",
@@ -2321,6 +2322,7 @@ dependencies = [
  "rocket_cors",
  "serde",
  "serde_json",
+ "shared",
  "thiserror",
  "tokio",
 ]
@@ -2355,6 +2357,14 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "shared"
+version = "0.1.0"
+dependencies = [
+ "notmuch",
+ "serde",
+]
+
 [[package]]
 name = "signal-hook-registry"
 version = "1.4.0"