Add test_coverage

Just testing it out

.gitignore

@@ -22,3 +22,5 @@ android/fastlane/report.xml
 
 # Android NDK Debug symbols
 debugSymbols
+
+test/.test_coverage.dart.

pubspec.lock

@@ -497,6 +497,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "2.0.0"
+  lcov:
+    dependency: transitive
+    description:
+      name: lcov
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "5.7.0"
   logging:
     dependency: transitive
     description:
@@ -910,6 +917,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.10"
+  test_coverage:
+    dependency: "direct dev"
+    description:
+      name: test_coverage
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.4.3"
   tool_base:
     dependency: transitive
     description:

pubspec.yaml

@@ -68,6 +68,7 @@ dev_dependencies:
   flutter_driver:
     sdk: flutter
   benchmark_harness: any
+  test_coverage: ^0.4.3
 
 dependency_overrides:
   intl: