feat(indexers): add Aither (#588)

* feat(indexers): add Aither

* Changed freeleech variable

Changed from freeleech to freeleechPercent

* Added resolution and internal variables to aither

* Fixed Aither regex pattern

- Thank you @nuxencs for assisting with the regex pattern

* fix: second test case missing end bracket

internal/indexer/definitions/aither.yaml

@@ -0,0 +1,66 @@
+---
+#id: Aither
+name: Aither
+identifier: aither
+description: Aither is a community-built Movie/TV/FANRES database.
+language: en-us
+urls:
+  - https://aither.cc/
+privacy: private
+protocol: torrent
+supports:
+  - irc
+  - rss
+source: UNIT3D
+settings:
+  - name: rsskey
+    type: secret
+    required: true
+    label: RSS key (RID)
+    help: "Go to your profile tab, Settings > Security, copy RSS Key (RID)"
+
+irc:
+  network: aither.cc
+  server: irc.aither.cc
+  port: 6697
+  tls: true
+  channels:
+    - "#Feed"
+  announcers:
+    - BOT
+  settings:
+
+    - name: nick
+      type: text
+      required: false
+      label: Username
+      help: Profile > Settings > External Chat Tokens > Add Device Token.
+
+    - name: auth.password
+      type: secret
+      required: false
+      label: NickServ Password
+      help: NickServ password
+
+  parse:
+    type: single
+    lines:
+      - test:
+          - "Category [Music] Type [Music - General] Name [Melanie Martinez - Copy Cat 2020 WEB FLAC 24-bits 44.1 kHz] Freeleech [0%] Internal [No] Double Upload [No] Size [44.06 MB] Uploader [Pure] Url [https://aither.cc/torrents/download/1231231]"
+          - "Category [Movie] Type [WEB-DL] Name [Izla 2021 FIL 1080p NF WEB-DL DD+ 5.1 H.264-HBO] Resolution [1080p] Freeleech [0%] Internal [No] Double Upload [No] Size [3.38 GB] Uploader [Anonymous] Url [https://aither.cc/torrents/download/213123123]"
+        pattern: 'Category \[(.+)\] Type \[(.+)\] Name \[(.+?)\] ?(?:Resolution \[(.*)\])? Freeleech \[(.+)\] Internal \[(.+)\] Double Upload \[(.+)\] Size \[(.+)\] Uploader \[(.+)\] Url \[(https?\:\/\/.+\/).+\/.+\/(\d+)\]'
+        vars:
+          - category
+          - releaseTags
+          - torrentName
+          - resolution
+          - freeleechPercent
+          - internal
+          - tags
+          - torrentSize
+          - uploader
+          - baseUrl
+          - torrentId
+
+    match:
+      torrenturl: "/torrent/download/{{ .torrentId }}.{{ .rsskey }}"