add CurseForge (#3533)

_data/simple-icons.json

@@ -1480,6 +1480,11 @@
             "hex": "073551",
             "source": "https://curl.haxx.se/logo/"
         },
+        {
+            "title": "CurseForge",
+            "hex": "6441A4",
+            "source": "https://www.curseforge.com/"
+        },
         {
             "title": "Cypress",
             "hex": "17202C",

icons/curseforge.svg

@@ -0,0 +1 @@
+<svg viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" role="img"><title>CurseForge icon</title><path d="M6.307 5.581l.391 1.675H0s.112.502.167.558c.168.279.335.614.559.837 1.06 1.228 2.902 1.73 4.409 2.009 1.06.224 2.121.28 3.181.335l1.228 3.293h.67l.391 1.061h-.558l-.949 3.07h9.321l-.949-3.07h-.558l.39-1.061h.67s.558-3.404 2.288-4.967C21.935 7.758 24 7.535 24 7.535V5.581H6.307zm9.377 8.428c-.447.279-.949.279-1.284.503-.223.111-.335.446-.335.446-.223-.502-.502-.67-.837-.781-.335-.112-.949-.056-1.786-.782-.558-.502-.614-1.172-.558-1.507v-.167c0-.056 0-.112.056-.168.111-.334.39-.669.948-.893 0 0-.39.559 0 1.117.224.335.67.502 1.061.279.167-.112.279-.335.335-.503.111-.39.111-.781-.224-1.06-.502-.446-.613-1.06-.279-1.451 0 0 .112.502.614.446.335 0 .335-.111.224-.223-.056-.167-.782-1.228.279-2.009 0 0 .669-.447 1.451-.391-.447.056-.949.335-1.116.782v.055c-.168.447-.056.949.279 1.396.223.335.502.614.614 1.06-.168-.056-.279 0-.391.112a.533.533 0 00-.112.502c.056.112.168.223.279.223h.168c.167-.055.279-.279.223-.446.112.111.167.391.112.558 0 .167-.112.335-.168.446-.056.112-.167.224-.223.335-.056.112-.112.224-.112.335 0 .112 0 .279.056.391.223.335.67 0 .782-.279.167-.335.111-.726-.112-1.061 0 0 .391.224.67 1.005.223.67-.168 1.451-.614 1.73z"/></svg>