refactor: isolate network toast and login redirect to separate services (#1412)

* refactor: isolate network toast and login redirect to separate services

* chore: remove accidentally committed sketch of a service

* chore: tidying things up

* feat: add `GlobalModule` encapsulating all global subscription services

* remove angular build cache when building deps

* chore: fix more issues found while testing

* chore: fix issues reported by testing

* chore: fix template error

* chore: fix server-info

* chore: fix server-info

* fix: switch to Observable to fix race conditions

* fix embassy name display on load

* update patchdb

* clean up patch data watch

Co-authored-by: Lucy Cifferello <12953208+elvece@users.noreply.github.com>

frontend/projects/shared/src/classes/http-error.ts

@@ -0,0 +1,10 @@
+import { HttpErrorResponse } from '@angular/common/http'
+
+export class HttpError {
+  readonly code = this.error.status
+  readonly message = this.error.statusText
+  readonly details = null
+  readonly revision = null
+
+  constructor(private readonly error: HttpErrorResponse) {}
+}

frontend/projects/shared/src/classes/rpc-error.ts

@@ -0,0 +1,25 @@
+import { RpcErrorDetails } from '../types/rpc-error-details'
+
+export class RpcError<T> {
+  readonly code = this.error.code
+  readonly message = this.getMessage()
+  readonly revision = this.getRevision()
+
+  constructor(private readonly error: RpcErrorDetails<T>) {}
+
+  private getMessage(): string {
+    if (typeof this.error.data === 'string') {
+      return `${this.error.message}\n\n${this.error.data}`
+    }
+
+    return this.error.data.details
+      ? `${this.error.message}\n\n${this.error.data.details}`
+      : this.error.message
+  }
+
+  private getRevision(): T | null {
+    return typeof this.error.data === 'string'
+      ? null
+      : this.error.data.revision || null
+  }
+}