services: add snapchat support (#429)

* feat: snapchat support

* chore: remove redundancy

* chore: a bit of better matching

* chore: update readme

* refactor(snapchat): refactor story matching to use pickers

* fix: small fix to directly linked stories

* fix(snapchat): fix filenames

* chore: update readme

* ref(snapchat): rewrite service, new test, split redirects into a util

* fix(snapchat): small fixes

* chore: deepscan error fixed

* fix: remove debug logging

* fix(snapchat): fix merge, clean up code with new utils

* fix(snapchat): update with suggested changes

---------

Signed-off-by: Snazzah <7025343+Snazzah@users.noreply.github.com>
Co-authored-by: jj <log@riseup.net>

src/modules/processing/servicesPatternTesters.js

@@ -30,6 +30,11 @@ export const testers = {
         (patternMatch.author?.length <= 255 && patternMatch.song?.length <= 255)
         || patternMatch.shortLink?.length <= 32,
 
+    "snapchat": (patternMatch) =>
+        (patternMatch.username?.length <= 32 && (!patternMatch.storyId || patternMatch.storyId?.length <= 255)) 
+        || patternMatch.spotlightId?.length <= 255 
+        || patternMatch.shortLink?.length <= 16,
+
     "streamable": (patternMatch) =>
         patternMatch.id?.length === 6,