✅test(reporter): add tests for reporter module

add tests, reformat code, add an output variable in writing function. All reading and writing functions must read in windows-1252 encoding because original logs are windows-1252 encoded

uv.lock

@@ -301,24 +301,22 @@ wheels = [
 name = "logwatcher"
 version = "0.1.0"
 source = { editable = "." }
-dependencies = [
-    { name = "pytest-cov" },
-]
 
 [package.dev-dependencies]
 dev = [
     { name = "mypy" },
     { name = "pytest" },
+    { name = "pytest-cov" },
     { name = "ruff" },
 ]
 
 [package.metadata]
-requires-dist = [{ name = "pytest-cov", specifier = ">=7.1.0" }]
 
 [package.metadata.requires-dev]
 dev = [
     { name = "mypy", specifier = ">=2.3.0" },
     { name = "pytest", specifier = ">=9.1.1" },
+    { name = "pytest-cov", specifier = ">=7.1.0" },
     { name = "ruff", specifier = ">=0.16.0" },
 ]