Attachments: Add extension support, allow all types for releases (#12465)

* Attachments: Add extension support, allow all types for releases

- Add support for file extensions, matching the `accept` attribute of `<input type="file">`
- Add support for type wildcard mime types, e.g. `image/*`
- Create repository.release.ALLOWED_TYPES setting (default unrestricted)
- Change default for attachment.ALLOWED_TYPES to a list of extensions
- Split out POST /attachments into two endpoints for issue/pr and
  releases to prevent circumvention of allowed types check

Fixes: https://github.com/go-gitea/gitea/pull/10172
Fixes: https://github.com/go-gitea/gitea/issues/7266
Fixes: https://github.com/go-gitea/gitea/pull/12460
Ref: https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#Unique_file_type_specifiers

* rename function

* extract GET routes out of RepoMustNotBeArchived

Co-authored-by: Lauris BH <lauris@nix.lv>

modules/secret/secret_test.go

@@ -20,3 +20,16 @@ func TestNew(t *testing.T) {
 	// check if secrets
 	assert.NotEqual(t, result, result2)
 }
+
+func TestEncryptDecrypt(t *testing.T) {
+	var hex string
+	var str string
+
+	hex, _ = EncryptSecret("foo", "baz")
+	str, _ = DecryptSecret("foo", hex)
+	assert.Equal(t, str, "baz")
+
+	hex, _ = EncryptSecret("bar", "baz")
+	str, _ = DecryptSecret("foo", hex)
+	assert.NotEqual(t, str, "baz")
+}