feat: Enable code coverage and integrate with Coveralls (#3)

* feat: Enable code coverage and integrate with Coveralls

* llvm-cov export lcov

* Update testing.yml

* Update README.md

.github/workflows/testing.yml

@@ -19,4 +19,8 @@ jobs:
       - name: Build
         run: swift build
       - name: Test
-        run: swift test
+        run: |
+          swift test --enable-code-coverage
+          xcrun llvm-cov export -format="lcov" .build/debug/EmailValidationPackageTests.xctest/Contents/MacOS/EmailValidationPackageTests -instr-profile .build/debug/codecov/default.profdata -ignore-filename-regex=".build|Tests" > info.lcov
+      - name: Coveralls
+        uses: coverallsapp/github-action@v2

.gitignore

@@ -6,3 +6,4 @@ DerivedData/
 .swiftpm/configuration/registries.json
 .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
 .netrc
+*.lcov

README.md

@@ -1,6 +1,10 @@
 # Email Validation Macro
 
 [![CodeFactor](https://www.codefactor.io/repository/github/josetorronteras/emailvalidationmacro/badge)](https://www.codefactor.io/repository/github/josetorronteras/emailvalidationmacro)
+[![testing](https://github.com/josetorronteras/EmailValidationMacro/actions/workflows/testing.yml/badge.svg)](https://github.com/josetorronteras/EmailValidationMacro/actions/workflows/testing.yml)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fjosetorronteras%2FEmailValidationMacro%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/josetorronteras/EmailValidationMacro)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Fjosetorronteras%2FEmailValidationMacro%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/josetorronteras/EmailValidationMacro)
+[![Coverage Status](https://coveralls.io/repos/github/josetorronteras/EmailValidationMacro/badge.svg?branch=main)](https://coveralls.io/github/josetorronteras/EmailValidationMacro?branch=main)
 
 Email Validation Macro is a Swift macro framework for validating email addresses.