(Feat): Initial Commit

internal/test/testdata/.env.test.local

@@ -0,0 +1,2 @@
+# for a simple overwrite test via TestDotEnvLoadFileOrSkipTest 
+SERVER_FRONTEND_BASE_URL=http://overwritten.dotenv.frontend.url.tld:3000

internal/test/testdata/TestSnapshotWithLocation.golden

@@ -0,0 +1,6 @@
+(struct { A string; B int; C bool; D *string }) {
+  A: (string) (len=3) "foo",
+  B: (int) 1,
+  C: (bool) true,
+  D: (*string)((len=3) "bar")
+}