Add Handy / Funscript support (#1377)

* Add funscript route to scenes

Adds a /scene/:id/funscript route which serves a funscript file, if present.

Current convention is that these are files stored with the same path, but with the extension ".funscript".

* Look for funscript during scan

This is stored in the Scene record and used to drive UI changes for funscript support.

Currently, that's limited to a funscript link in the Scene's file info.

* Add filtering and sorting for interactive
* Add Handy connection key to interface config
* Add Handy client and placeholder component.

Uses defucilis/thehandy, but not thehandy-react as I had difficulty integrating the context with the existing components.

Instead, the expensive calculation for the server time offset is put in localStorage for reuse.

A debounce was added when scrubbing the video, as otherwise it spammed the Handy API with updates to the current offset.

graphql/schema/types/config.graphql

@@ -190,6 +190,8 @@ input ConfigInterfaceInput {
   language: String
   """Slideshow Delay"""
   slideshowDelay: Int
+  """Handy Connection Key"""
+  handyKey: String
 }
 
 type ConfigInterfaceResult {
@@ -214,6 +216,8 @@ type ConfigInterfaceResult {
   language: String
   """Slideshow Delay"""
   slideshowDelay: Int
+  """Handy Connection Key"""
+  handyKey: String
 }
 
 input ConfigDLNAInput {

graphql/schema/types/filters.graphql

@@ -139,6 +139,8 @@ input SceneFilterType {
   stash_id: StringCriterionInput
   """Filter by url"""
   url: StringCriterionInput
+  """Filter by interactive"""
+  interactive: Boolean
 }
 
 input MovieFilterType {

graphql/schema/types/scene.graphql

@@ -17,6 +17,7 @@ type ScenePathsType {
   vtt: String # Resolver
   chapters_vtt: String # Resolver
   sprite: String # Resolver
+  funscript: String # Resolver
 }
 
 type SceneMovie {
@@ -37,6 +38,7 @@ type Scene {
   o_counter: Int
   path: String!
   phash: String
+  interactive: Boolean!
 
   file: SceneFileType! # Resolver
   paths: ScenePathsType! # Resolver