Defined the ResourceFile enumeration in the library target and also, implemented its "fileName" computed property.

Library/Sources/Enumerations/ResourceFile.swift

@@ -0,0 +1,29 @@
+enum ResourceFile: String {
+    case dockerIgnore = "docker_ignore"
+    case gitIgnore = "git_ignore"
+    case license
+    case package
+    case readme
+}
+
+// MARK: - Properties
+
+extension ResourceFile {
+    
+    // MARK: Computed
+
+    var fileName: String {
+        switch self {
+        case .dockerIgnore: return ".dockerignore"
+        case .gitIgnore: return ".gitignore"
+        case .license: return "LICENSE"
+        case .readme: return "README.md"
+        case .package: return "Package.swift"
+        }
+    }
+    
+}
+
+// MARK: - CaseIterable
+
+extension ResourceFile: CaseIterable {}

Test/Sources/Cases/Enumerations/ResourceFileTests.swift

@@ -0,0 +1,20 @@
+import Testing
+
+@testable import ColibriLibrary
+
+struct ResourceFileTests {
+    
+    // MARK: Properties tests
+
+    @Test(arguments: zip(ResourceFile.allCases,
+                         [".dockerignore", ".gitignore", "LICENSE", "Package.swift", "README.md"]))
+    func fileName(for resource: ResourceFile, expects fileName: String) async throws {
+        // GIVEN
+        // WHEN
+        let result = resource.fileName
+        
+        // THEN
+        #expect(result == fileName)
+    }
+
+}