feat(indexers): add support for optional baseurl override (#551)

* feat(indexers): optional baseurl override

* feat(indexers): update baseUrl parsing

* refactor(indexers): BREAKING move parse to IRC struct

* Move Parse as part of IRC struct from Indexer
* Updated definitions
* Build torrentUrl in stages
* Use new url.JoinPath to build torrentUrl
* Update tests

* refactor(indexers): select option obj

* refactor(indexers): make backwards compatible

internal/indexer/definitions/scenehd.yaml

@@ -5,7 +5,7 @@ identifier: scenehd
 description: SceneHD (SCHD) is a private torrent tracker for HD MOVIES / TV.
 language: en-us
 urls:
-  - https://scenehd.org
+  - https://scenehd.org/
 privacy: private
 protocol: torrent
 supports:
@@ -54,17 +54,17 @@ irc:
       label: Invite command
       help: Invite auth with SceneHD. Replace IRCKEY with your IRC key
 
-parse:
-  type: single
-  lines:
-    - test:
-        - "[NEW] Some.Show.S08E20.EXTENDED.720p.BluRay.X264-GROUP [TV/720] https://scenehd.org/details.php?id=00000"
-      pattern: '\[NEW] (.*) \[([^\]]+)] (https?\:\/\/[^\/]+)\/.*[&\?]id=(\d+)'
-      vars:
-        - torrentName
-        - category
-        - baseUrl
-        - torrentId
+  parse:
+    type: single
+    lines:
+      - test:
+          - "[NEW] Some.Show.S08E20.EXTENDED.720p.BluRay.X264-GROUP [TV/720] https://scenehd.org/details.php?id=00000"
+        pattern: '\[NEW] (.+) \[(.+)] (https?\:\/\/.+\/).*id=(\d+)'
+        vars:
+          - torrentName
+          - category
+          - baseUrl
+          - torrentId
 
-  match:
-    torrenturl: "{{ .baseUrl }}/download.php?id={{ .torrentId }}&passkey={{ .passkey }}"
+    match:
+      torrenturl: "/download.php?id={{ .torrentId }}&passkey={{ .passkey }}"