docs(streaming): add struct and field-level doc comments to CreateStreamParams (closes #473)

Author: Bilalishaq7

contracts/streaming/src/lib.rs

@@ -147,7 +147,20 @@ pub struct StreamMetadata {
 
 #[contracttype]
 #[derive(Clone, Debug)]
+/// Parameters required to initialize and start a stream.
 pub struct CreateStreamParams {
+    /// Unique identifier for the stream recipient.
+    pub recipient: Address,
+    /// Total amount of tokens allocated for the stream duration.
+    pub total_amount: i128,
+    /// Unix timestamp marking when token streaming begins.
+    pub start_time: u64,
+    /// Unix timestamp marking when token streaming ends.
+    pub stop_time: u64,
+    /// Amount of tokens unlocked immediately at start_time.
+    pub cliff_amount: i128,
+    /// Address of the token contract used for payments.
+    pub token_address: Address,
     pub recipient: Address,
     pub token: Address,
     pub total_amount: i128,