Move tsconfig.test.json to test directory

WebStorm does not support typescript.*.json files,
but always uses the nearest tsconfig.json.
Moving the test-specific tsconfig into the test folder allows WebStorm
to use the correct config for the E2E-tests and
stops it from showing unnecessary errors.

Signed-off-by: David Mehren <git@herrmehren.de>

jest-e2e.json

@@ -16,7 +16,7 @@
   "testTimeout": 10000,
   "globals": {
     "ts-jest": {
-      "tsconfig": "tsconfig.test.json"
+      "tsconfig": "test/tsconfig.json"
     }
   }
 }

package.json

@@ -108,7 +108,7 @@
     "testEnvironment": "node",
     "globals": {
       "ts-jest": {
-        "tsconfig": "tsconfig.test.json"
+        "tsconfig": "test/tsconfig.json"
       }
     }
   }

test/tsconfig.json

@@ -1,5 +1,5 @@
 {
-  "extends": "./tsconfig.json",
+  "extends": "../tsconfig.json",
   "compilerOptions": {
     "strict": false
   }