services: add facebook support (#403)

* feat: add facebook support

* chore: fix fail check

* chore: minor fix

* chore: add service in README.md

* chore: cleaning post-merge code

* facebook: add shared link pattern

* chore: clean up removing unnecessarily code

* fix: facebook shared link pattern

* matchActionDecider: redirect to facebook video instead of rendering

* facebook: pass sourceUrl in object

* url: fix botched lint

* fix: facebook shared link pattern with clean up

* test: change facebook test response to redirect

---------

Co-authored-by: dumbmoron <log@riseup.net>

src/modules/processing/servicesPatternTesters.js

@@ -1,5 +1,5 @@
 export const testers = {
-    "bilibili": (patternMatch) => 
+    "bilibili": (patternMatch) =>
         patternMatch.comId?.length <= 12 || patternMatch.comShortLink?.length <= 16
         || patternMatch.tvId?.length <= 24,
 
@@ -27,7 +27,7 @@ export const testers = {
         patternMatch.id?.length === 32 || patternMatch.yappyId?.length === 32,
 
     "soundcloud": (patternMatch) =>
-        (patternMatch.author?.length <= 255 && patternMatch.song?.length <= 255) 
+        (patternMatch.author?.length <= 255 && patternMatch.song?.length <= 255)
         || patternMatch.shortLink?.length <= 32,
 
     "streamable": (patternMatch) =>
@@ -58,4 +58,10 @@ export const testers = {
 
     "youtube": (patternMatch) =>
         patternMatch.id?.length <= 11,
+
+    "facebook": (patternMatch) =>
+        patternMatch.shortLink?.length <= 11
+        || patternMatch.username?.length <= 30
+        || patternMatch.caption?.length <= 255
+        || patternMatch.id?.length <= 20,
 }