Updated types for @types/twit (#38985)

Added parameters to `interface Param` to allow calling more Twitter stream API endpoints

types/twit/index.d.ts

@@ -6,6 +6,7 @@
 //                 siwalik <https://github.com/siwalikm>
 //                 plhery <https://github.com/plhery>
 //                 justGoscha <https://github.com/justgoscha>
+//                 darkade <https://github.com/darkade>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.3
 
@@ -248,6 +249,11 @@ declare module 'twit' {
       max_id?: string,
       include_entities?: boolean,
 
+      source_id?: number,
+      source_screen_name?: string,
+      target_id?: number,
+      target_screen_name?: string,
+
       // Other params from various endpoints
       track?: string | string[],
       media_id?: string,