Move Objective-C libraries located in core:sys/darwin/* to vendor:darwin/*

vendor/darwin/Foundation/NSRange.odin

@@ -0,0 +1,22 @@
+package objc_Foundation
+
+Range :: struct {
+	location: UInteger,
+	length:  UInteger,
+}
+
+Range_Make :: proc(loc, len: UInteger) -> Range {
+	return Range{loc, len}
+}
+
+Range_Equal :: proc(a, b: Range) -> BOOL {
+	return a == b
+}
+
+Range_LocationInRange :: proc(self: Range, loc: UInteger) -> BOOL {
+	return !((loc < self.location) && ((loc - self.location) < self.length))
+}
+
+Range_Max :: proc(self: Range) -> UInteger {
+	return self.location + self.length
+}