[Client] Improve card database update visibility (#7458)

* [Client] Improve card database update visibility

Addresses Cockatrice/Cockatrice#7431.

Cockatrice previously offered no in-client feedback while the card
database updater ran: the only progress UI lived in the first-run
wizard, stderr/stdout were not parsed in interactive runs, and starting
a second update with Oracle already open or with a hidden background run
active just showed a confusing 'already running' guard - even though
Oracle is launched as a separate process with no lifecycle tracking.

- Add a status-bar widget (CardDatabaseUpdateStatusBar) that appears
  while an update runs and shows the Downloading/Parsing/Importing
  stages with percent progress; it is also used in the quit-confirm
  prompt so users see an unfinished update before cancelling it.
- Parse the updater's PROGRESS lines (new CardUpdateProgressParser,
  unit-tested) in both foreground and background runs and log stage
  changes to the new card_database.update category, throttled to at
  most one line per second; forward Oracle stderr to the logs.
- Show a tray balloon when a background update starts and on finish or
  failure instead of staying silent.
- Request a running Oracle instance to raise itself (QLocalServer
  CockatriceOracleRaise-<user>) when the user starts another update, and
  demote the 'already running' guard to an informative message only when
  no running instance can be found.
- Emit download/scan/import progress unconditionally from Oracle so
  interactive and background runs behave the same.
- Document the new log category in the troubleshooting guide.

* [Client] Address card database update review feedback

* [Client] Add setting to control card database update tray notifications

* [Client] Address remaining card database update review nits

- Rename card_update_progress_parser.{h,cpp} to card_update_progress.{h,cpp}
- Store the CardUpdateProgress struct in the status bar widget

* Lint.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

oracle/src/oracleimporter.h

@@ -185,9 +185,10 @@ private:
 
     /**
      * Whether readSetsFromByteArray() should report scan progress via
-     * dataReadProgress. A background run routes that signal to stdout (for the
-     * hosting Cockatrice client to parse); the flag exists to skip the scanner
-     * instrumentation entirely when no consumer needs it.
+     * dataReadProgress. The wizard streams that signal to stdout (for the
+     * hosting Cockatrice client to parse) in both interactive and background
+     * runs; the flag exists to skip the scanner instrumentation entirely when
+     * no consumer needs it.
      */
     bool progressReporting = true;
 
@@ -255,9 +256,9 @@ public:
      * @brief Controls whether readSetsFromByteArray() instruments the raw scan.
      *
      * When enabled (the default) the raw scanner reports progress via
-     * dataReadProgress(), which an interactive wizard shows on its progress bar
-     * and a background run routes to stdout for the hosting client. Switch it
-     * off only when nothing will consume scan progress.
+     * dataReadProgress(), which the wizard streams to stdout (so the hosting
+     * Cockatrice client can show it) and also displays on its own progress bar.
+     * Switch it off only when nothing will consume scan progress.
      */
     void setProgressReporting(bool enabled)
     {