add arXiv 2026Q2 fetch data

Author: TimidRobot

data/2026Q2/1-fetch/arxiv_1_count.csv

@@ -0,0 +1,8 @@
+"TOOL_IDENTIFIER","COUNT"
+"CC BY 3.0","7912"
+"CC BY 4.0","508185"
+"CC BY-NC-ND 4.0","79769"
+"CC BY-NC-SA 3.0","5873"
+"CC BY-NC-SA 4.0","59845"
+"CC BY-SA 4.0","27524"
+"CC0 1.0","20124"