refactor_serivces

- Rewrite the service's binding/handler assignment systems
- Removed loopholes that allowed traversal between services to clarify dependencies.
- Consolidated the hidden state-related state, the handler, and the addition of bindings to the handler into a single object.
  - Currently, functions that can have handlers added implement either addHandler or setHandler directly on the function itself.
I understand there are differing opinions on this, but for now, this is how it stands.
- Services now possess a Context. Please ensure each platform has a class that inherits from ServiceContext.
- To permit services to be dynamically bound, the services themselves are now defined by interfaces.

src/modules/features/SetupWizard/dialogs/SetupRemoteP2P.svelte

@@ -93,6 +93,9 @@
                 keys: () => {
                     return Promise.resolve(Array.from(map.keys()));
                 },
+                get db() {
+                    return Promise.resolve(this);
+                },
             } as SimpleStore<any>;
 
             const dummyPouch = new PouchDB<EntryDoc>("dummy");