Adds detection for Obsidian and Perplexity (#7765)

* Adds detection for Obsidian
* Adds detection for Perplexity

Tests/Parser/Client/fixtures/mobile_app.yml

@@ -2093,3 +2093,15 @@
     type: mobile app
     name: WatchFree+
     version: 24.06.13.2
+-
+  user_agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) obsidian/1.4.16 Chrome/114.0.5735.289 Electron/25.8.1 Safari/537.36
+  client:
+    type: mobile app
+    name: Obsidian
+    version: 1.4.16
+-
+  user_agent: Perplexity/5280 CFNetwork/1408.0.4 Darwin/22.5.0
+  client:
+    type: mobile app
+    name: Perplexity
+    version: ""

regexes/client/mobile_apps.yml

@@ -2500,6 +2500,16 @@
   name: 'WatchFree+'
   version: '$1'
 
+# Obsidian (https://obsidian.md/)
+- regex: 'obsidian/([\d\.]+)'
+  name: 'Obsidian'
+  version: '$1'
+
+# Perplexity (https://apps.apple.com/us/app/perplexity-ask-anything/id1668000334)
+- regex: 'Perplexity'
+  name: 'Perplexity'
+  version: ''
+
 # Electron generic apps
 - regex:  ' (?!(?:AppleWebKit|brave|Franz|Mailspring|Notion|Basecamp|Evernote|catalyst|ramboxpro|BlueMail|BeakerBrowser|TweakStyle|Colibri|Polypane|VibeMate|(?:d|LT|Glass|Sushi|Flash|OhHai)Browser|Sizzy))([a-z0-9]*)(?:-desktop|-electron-app)?/(\d+\.[\d.]+).*Electron/'
   name: '$1'