Revert "Remove populateCacheFromDisplay config"

This reverts commit 25de4a6.

Note: this might actually still be useful for older Haxe versions..

src/haxeLanguageServer/Configuration.hx

@@ -94,6 +94,7 @@ typedef UserConfig = {
 	var buildCompletionCache:Bool;
 	var enableCompletionCacheWarning:Bool;
 	var useLegacyCompletion:Bool;
+	var populateCacheFromDisplay:Bool;
 	var codeGeneration:CodeGenerationConfig;
 	var exclude:Array<String>;
 	var postfixCompletion:PostfixCompletionConfig;
@@ -161,6 +162,7 @@ class Configuration {
 		displayPort: null,
 		buildCompletionCache: true,
 		enableCompletionCacheWarning: true,
+		populateCacheFromDisplay: true,
 		useLegacyCompletion: false,
 		codeGeneration: {
 			functions: {

src/haxeLanguageServer/server/HaxeServer.hx

@@ -205,6 +205,7 @@ class HaxeServer {
 		context.callHaxeMethod(ServerMethods.Configure, {
 			noModuleChecks: true,
 			print: context.config.displayServer.print,
+			populateCacheFromDisplay: context.config.user.populateCacheFromDisplay,
 			legacyCompletion: context.config.user.useLegacyCompletion
 		}, null, _ -> null, function(error) {
 			trace("Error during " + ServerMethods.Configure + " " + error);