GHA: Add additional checks for common issues (#1922)

* GHA, tests: Add additional checks for common issues

These checks include:
- Ensuring that all testify funcs use their formatted variants (e.g., `assert.Equalf(t, expected, actual)` instead of `assert.Equal(t, expected, actual)`).
- Replacing `%s` with %q
- Enforcing consistent usage of should/must wording for testify assert/require messages

* Add support for checking backticked string format specifiers and fix issues

* tests: Fix error comparisons

* tests: Replace errors.Is(err, nil) usage with testify and automate check

* refactor: Rename ExtractPort to ExtractPortOrDefault

* tests: Replace assert with require for error handling in multiple test files

* tests: Replace assert with require for error handling and improve assertions in data tests

* tests: Fix typo in assertion message for StreamVol test

* OKX: Fix GetOpenInterestAndVolumeStrike test with instrument selection and improved assertions

* OKX: Revert intentional error check

* Improve error message for expiry time check in GetOpenInterestAndVolumeStrike test

exchanges/subscription/fixtures_test.go

@@ -26,7 +26,7 @@ type mockExWithSubValidator struct {
 func (m *mockExWithSubValidator) ValidateSubscriptions(in List) error {
 	for _, sub := range in {
 		if sub.Channel == "fail-channel" {
-			return fmt.Errorf("%w: '%s'", errValidateSubscriptionsTestError, sub.String())
+			return fmt.Errorf("%w: %q", errValidateSubscriptionsTestError, sub.String())
 		}
 	}
 	return nil

exchanges/subscription/subscription_test.go

@@ -101,7 +101,7 @@ func TestSubscriptionClone(t *testing.T) {
 	}
 	a.EnsureKeyed()
 	b := a.Clone()
-	assert.IsType(t, new(Subscription), b, "Clone must return a Subscription pointer")
+	assert.IsType(t, new(Subscription), b, "Clone should return a Subscription pointer")
 	assert.NotSame(t, a, b, "Clone should return a new Subscription")
 	assert.Nil(t, b.Key, "Clone should have a nil key")
 	b.Pairs[0].Delimiter = "🐳"
@@ -111,7 +111,7 @@ func TestSubscriptionClone(t *testing.T) {
 	assert.NotEqual(t, params, b.Params, "Params should be cloned")
 	assert.Equal(t, params, a.Params, "Original Params should be left alone")
 	a.m.Lock()
-	assert.True(t, b.m.TryLock(), "Clone must use a different Mutex")
+	assert.True(t, b.m.TryLock(), "Clone should use a different Mutex")
 }
 
 // TestSetKey exercises SetKey