Add tsconfig.base (#800)

* Add tsconfig.base

* Remove unused package

* yarn

* Adjust paths

tsconfig.base.json

@@ -0,0 +1,15 @@
+{
+  "extends": "@polkadot/dev/config/tsconfig.json",
+	"compilerOptions": {
+		"composite": true,
+		"paths": {
+      "@polkadot/phishing": ["phishing/src"],
+      "@polkadot/phishing/*": ["phishing/src/*"]
+    },
+    "resolveJsonModule": true,
+    "skipLibCheck": true,
+    "typeRoots": [
+      "./node_modules/@types"
+    ]
+	}
+ }