Add open file dialog panel to foundation

vendor/darwin/Foundation/NSOpenPanel.odin

@@ -0,0 +1,31 @@
+package objc_Foundation
+
+@(objc_class="NSOpenPanel")
+OpenPanel :: struct{ using _: SavePanel }
+
+@(objc_type=OpenPanel, objc_name="openPanel", objc_is_class_method=true)
+OpenPanel_openPanel :: proc() -> ^OpenPanel {
+	return msgSend(^OpenPanel, OpenPanel, "openPanel")
+}
+
+@(objc_type=OpenPanel, objc_name="URLs")
+OpenPanel_URLs :: proc(self: ^OpenPanel) -> ^Array {
+	return msgSend(^Array, self, "URLs")
+}
+
+@(objc_type=OpenPanel, objc_name="setCanChooseFiles")
+OpenPanel_setCanChooseFiles :: proc(self: ^OpenPanel, setting: BOOL) {
+	msgSend(nil, self, "setCanChooseFiles:", setting)
+}
+@(objc_type=OpenPanel, objc_name="setCanChooseDirectories")
+OpenPanel_setCanChooseDirectories :: proc(self: ^OpenPanel, setting: BOOL) {
+	msgSend(nil, self, "setCanChooseDirectories:", setting)
+}
+@(objc_type=OpenPanel, objc_name="setResolvesAliases")
+OpenPanel_setResolvesAliases :: proc(self: ^OpenPanel, setting: BOOL) {
+	msgSend(nil, self, "setResolvesAliases:", setting)
+}
+@(objc_type=OpenPanel, objc_name="setAllowsMultipleSelection")
+OpenPanel_setAllowsMultipleSelection :: proc(self: ^OpenPanel, setting: BOOL) {
+	msgSend(nil, self, "setAllowsMultipleSelection:", setting)
+}

vendor/darwin/Foundation/NSPanel.odin

@@ -0,0 +1,9 @@
+package objc_Foundation
+
+ModalResponse :: enum UInteger {
+	Cancel = 0,
+	OK = 1,
+}
+
+@(objc_class="NSPanel")
+Panel :: struct{ using _: Window }

vendor/darwin/Foundation/NSSavePanel.odin

@@ -0,0 +1,9 @@
+package objc_Foundation
+
+@(objc_class="NSSavePanel")
+SavePanel :: struct{ using _: Panel }
+
+@(objc_type=SavePanel, objc_name="runModal")
+SavePanel_runModal :: proc(self: ^SavePanel) -> ModalResponse {
+	return msgSend(ModalResponse, self, "runModal")
+}

vendor/darwin/Foundation/NSURL.odin

@@ -25,6 +25,6 @@ URL_initFileURLWithPath :: proc(self: ^URL, path: ^String) -> ^URL {
 }
 
 @(objc_type=URL, objc_name="fileSystemRepresentation")
-URL_fileSystemRepresentation :: proc(self: ^URL) -> ^String {
-	return msgSend(^String, self, "fileSystemRepresentation")
-}
+URL_fileSystemRepresentation :: proc(self: ^URL) -> cstring {
+	return msgSend(cstring, self, "fileSystemRepresentation")
+}