Delete obsolete JVM intrinsics for ranges/progressions

All Range and Progression classes are now fully written in Kotlin and thus do
not need any intrinsics to operate
TODO: dirty StringPlus hack
Fix LoadBuiltinsTest after renaming "jet" to "kotlin"
Replace "jet" package name with "kotlin" in testData
JS: update mangled names after moving built-ins from "jet" to "kotlin"
Split Library.kt into several files

For better readbility and discoverability
Generate built-in sources of arrays

Extract Array class into a separate file, move arrayOfNulls to Library.kt, fix
formatting and generate Arrays.kt
Fix StringJVMTest, call Arrays.toString()

ByteArray.toString() returns nonsensical strings
Delete Annotations.kt, move "annotationType" to JVM stdlib