feat(server): support for read-only assets and importing existing items in the filesystem (#2715)

* Added read-only flag for assets, endpoint to trigger file import vs upload

* updated fixtures with new property

* if upload is 'read-only', ensure there is no existing asset at the designated originalPath

* added test for file import as well as detecting existing image at read-only destination location

* Added storage service test for a case where it should not move read-only assets

* upload doesn't need the read-only flag available, just importing

* default isReadOnly on import endpoint to true

* formatting fixes

* create-asset dto needs isReadOnly, so set it to false by default on create, updated api generation

* updated code to reflect changes in MR

* fixed read stream promise return type

* new index for originalPath, check for existing path on import, reglardless of user, to prevent duplicates

* refactor: import asset

* chore: open api

* chore: tests

* Added externalPath support for individual users, updated UI to allow this to be set by admin

* added missing var for externalPath in ui

* chore: open api

* fix: compilation issues

* fix: server test

* built api, fixed user-response dto to include externalPath

* reverted accidental commit

* bad commit of duplicate externalPath in user response  dto

* fixed tests to include externalPath on expected result

* fix: unit tests

* centralized supported filetypes, perform file type checking of asset and sidecar during file import process

* centralized supported filetype check method to keep regex DRY

* fixed typo

* combined migrations into one

* update api

* Removed externalPath from shared-link code, added column to admin user page whether external paths / import is enabled or not

* update mimetype

* Fixed detect correct mimetype

* revert asset-upload config

* reverted domain.constant

* refactor

* fix mime-type issue

* fix format

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>
Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

mobile/openapi/test/import_asset_dto_test.dart

@@ -0,0 +1,82 @@
+//
+// AUTO-GENERATED FILE, DO NOT MODIFY!
+//
+// @dart=2.12
+
+// ignore_for_file: unused_element, unused_import
+// ignore_for_file: always_put_required_named_parameters_first
+// ignore_for_file: constant_identifier_names
+// ignore_for_file: lines_longer_than_80_chars
+
+import 'package:openapi/api.dart';
+import 'package:test/test.dart';
+
+// tests for ImportAssetDto
+void main() {
+  // final instance = ImportAssetDto();
+
+  group('test ImportAssetDto', () {
+    // AssetTypeEnum assetType
+    test('to test the property `assetType`', () async {
+      // TODO
+    });
+
+    // bool isReadOnly (default value: true)
+    test('to test the property `isReadOnly`', () async {
+      // TODO
+    });
+
+    // String assetPath
+    test('to test the property `assetPath`', () async {
+      // TODO
+    });
+
+    // String sidecarPath
+    test('to test the property `sidecarPath`', () async {
+      // TODO
+    });
+
+    // String deviceAssetId
+    test('to test the property `deviceAssetId`', () async {
+      // TODO
+    });
+
+    // String deviceId
+    test('to test the property `deviceId`', () async {
+      // TODO
+    });
+
+    // DateTime fileCreatedAt
+    test('to test the property `fileCreatedAt`', () async {
+      // TODO
+    });
+
+    // DateTime fileModifiedAt
+    test('to test the property `fileModifiedAt`', () async {
+      // TODO
+    });
+
+    // bool isFavorite
+    test('to test the property `isFavorite`', () async {
+      // TODO
+    });
+
+    // bool isArchived
+    test('to test the property `isArchived`', () async {
+      // TODO
+    });
+
+    // bool isVisible
+    test('to test the property `isVisible`', () async {
+      // TODO
+    });
+
+    // String duration
+    test('to test the property `duration`', () async {
+      // TODO
+    });
+
+
+  });
+
+}