Usage of getlink and choosewindow methods in gliderecord. (#1077)

Author: saitarun2499

GlideRecord/Choose Window for better performance/README.md

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+chooseWindow method is used to paginate the records while using Glide Record on any table.
+This method allows you to paginate through records, fetching only a window (subset) of records, which can be useful for performance when dealing with large datasets. 
+summary : Paginate large result sets by selecting a window of records.

GlideRecord/Choose Window for better performance/script.js

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+var gr = new GlideRecord('incident');
+gr.chooseWindow(0, 10); // Fetch the first 10 records
+gr.query();
+while (gr.next()) {
+  gs.info(gr.number);
+}

GlideRecord/Get link for the Record/README.md

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+getLink() generates a direct URL to the record, useful for embedding links to records in notifications or logging them.
+Summary: Generate a URL link to the record.

GlideRecord/Get link for the Record/script.js

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+var gr = new GlideRecord('incident');
+if (gr.get('sys_id_of_record')) {
+  gs.info('Incident link: ' + gr.getLink());
+}