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/shared/series-format/series-format.component.html

@@ -0,0 +1,4 @@
+<ng-container *ngIf="format != MangaFormat.UNKNOWN">
+    <i class="fa {{utilityService.mangaFormatIcon(format)}}" aria-hidden="true" title="{{utilityService.mangaFormat(format)}}"></i>&nbsp;
+    <ng-content></ng-content>
+</ng-container>

UI/Web/src/app/shared/series-format/series-format.component.ts

@@ -0,0 +1,23 @@
+import { Component, Input, OnInit } from '@angular/core';
+import { MangaFormat } from 'src/app/_models/manga-format';
+import { UtilityService } from '../_services/utility.service';
+
+@Component({
+  selector: 'app-series-format',
+  templateUrl: './series-format.component.html',
+  styleUrls: ['./series-format.component.scss']
+})
+export class SeriesFormatComponent implements OnInit {
+
+  @Input() format: MangaFormat = MangaFormat.UNKNOWN;
+
+  get MangaFormat(): typeof MangaFormat {
+    return MangaFormat;
+  }
+
+  constructor(public utilityService: UtilityService) { }
+
+  ngOnInit(): void {
+  }
+
+}