Feature/performance pdf (#426)

#  Added
- Added: Added series format information to the search typeahead to help identify duplicate series in libraries

# Fixed
- Fixed: Fixed accent color not looking well on light theme
- Fixed: Attempted to fix the memory issues with PDF reading on Docker. Uses a Memory Pool for streams and removes a bitmap operation for fixing books with transparent backgrounds (#424)

# Changed
- Changed: Refactored download logs to use the same download code as rest of Kavita 

# Dev stuff
- Added timeout for Regex's to make sure during matching, malicious filenames doesn't crash user system
- Refactored a missing GetCoverImage to use Series Format rather than old Library Type

==================================================
* Added Timeout for Regex matching to ensure malicious filenames don't crash system

* Refactored GetCoverImage to use series format rather than library type

* Refactored download logs to use the download service

* Fixed accent color not looking well on light theme

* Refactored series format into dedicated component and added to search results

* Switch to using MemoryManager for Streams to attempt to minimize GC pressure and reduced bitmap manipulation for transparency hack.

UI/Web/src/app/_services/server.service.ts

@@ -16,10 +16,6 @@ export class ServerService {
     return this.httpClient.post(this.baseUrl + 'server/restart', {});
   }
 
-  fetchLogs() {
-    return this.httpClient.get(this.baseUrl + 'server/logs', {responseType: 'blob' as 'text'});
-  }
-
   getServerInfo() {
     return this.httpClient.get<ServerInfo>(this.baseUrl + 'server/server-info');
   }