test: exclude template-explorer from coverage

jest.config.js

@@ -9,7 +9,10 @@ module.exports = {
   },
   coverageDirectory: 'coverage',
   coverageReporters: ['html', 'lcov', 'text'],
-  collectCoverageFrom: ['packages/*/src/**/*.ts'],
+  collectCoverageFrom: [
+    'packages/*/src/**/*.ts',
+    '!packages/template-explorer/**'
+  ],
   watchPathIgnorePatterns: ['/node_modules/'],
   moduleFileExtensions: ['ts', 'tsx', 'js', 'json'],
   moduleNameMapper: {