Add typing for new Query methods

Author: stnguyen90

index.d.ts

@@ -1852,6 +1852,18 @@ declare module "node-appwrite" {
 
     static greaterThanEqual(attribute: string, value: QueryTypes): string;
 
+    static isNull(attribute: string): string;
+
+    static isNotNull(attribute: string): string;
+
+    static between<T extends string | number>(attribute: string, start: T, end: T): string;
+
+    static startsWith(attribute: string, value: string): string;
+
+    static endsWith(attribute: string, value: string): string;
+
+    static select(attributes: string[]): string;
+
     static search(attribute: string, value: string): string;
 
     static orderDesc(attribute: string): string;