Rename kotlin to sources-for-web

This makes it harder to edit generated files by accident.
I also changed the extension from kt to kt.txt so the files are not syntax-highlighted in the IDE.

.gitignore

@@ -1,4 +1,4 @@
 .gradle
 build
 .idea
-src/commonMain/resources/kotlin/
+src/commonMain/resources/sources-for-web/

build.gradle.kts

@@ -84,7 +84,8 @@ val embedSourcesTask by tasks.creating(Task::class) {
     doLast {
         copy {
             from("src/commonMain/kotlin")
-            into("src/commonMain/resources/kotlin/")
+            rename { "$it.txt" }
+            into("src/commonMain/resources/sources-for-web/")
         }
         println("Copied kotlin folder into resources")
     }

src/commonMain/kotlin/TemplateProgram.kt

@@ -25,6 +25,6 @@ fun main() {
             """<span>$programName</span> """
     }
 
-    loadAndHighlight("kotlin/${currentProgram}.kt")
+    loadAndHighlight("sources-for-web/${currentProgram}.kt.txt")
 }
 external fun loadAndHighlight(url: String)

src/commonMain/kotlin/fabulousPink.kt

@@ -29,4 +29,5 @@ fun fabulousPink() = application {
             // Construct and draw a closed Hobby curve with the points.
             drawer.contour(hobbyCurve(points, true))
         }
-    }}
+    }
+}