enhance: add callstack (#811)

* add callStack

* add callstack to error message

* changelog

* add test for callstack

* fix api report

* 関数値に関数名を追加

* コールスタックの表示に関数値の関数名を使用

* 関数名をズラして表示する

* fix lint warnings and api report

* エラー発生位置情報をコールスタックへ移動

* 名前空間内の関数名に名前空間を追加

* improve test

* update api report

etc/aiscript.api.md

@@ -645,6 +645,7 @@ export class Scope {
     exists(name: string): boolean;
     get(name: string): Value;
     getAll(): Map<string, Variable>;
+    getNsPrefix(): string;
     // (undocumented)
     name: string;
     // (undocumented)
@@ -857,15 +858,16 @@ type VStr = {
 // @public (undocumented)
 type VUserFn = VFnBase & {
     native?: undefined;
+    name?: string;
     args: VFnArg[];
     statements: Node_2[];
     scope: Scope;
 };
 
 // Warnings were encountered during analysis:
 //
-// src/interpreter/index.ts:38:4 - (ae-forgotten-export) The symbol "LogObject" needs to be exported by the entry point index.d.ts
-// src/interpreter/value.ts:46:2 - (ae-forgotten-export) The symbol "Type" needs to be exported by the entry point index.d.ts
+// src/interpreter/index.ts:43:4 - (ae-forgotten-export) The symbol "LogObject" needs to be exported by the entry point index.d.ts
+// src/interpreter/value.ts:47:2 - (ae-forgotten-export) The symbol "Type" needs to be exported by the entry point index.d.ts
 
 // (No @packageDocumentation comment for this package)