feat: Major refactor, implement web, caching, better tests and build files

* Update golang version to 1.24
* Update multiarch Dockerfile to be more ISA agnostic
* Refactor existing code and properly structure project into modules
* Get rid of global variables except where necessary (go:embed)
* Add default values to Config
* Add webserver with templates to finally correctly serve videos and gifs
* Add tiny caching library to decrease api load and improve latency
* Improve Webhook data preparation by filtering out redundant links
  from the tweet text and properly attaching videos and gifs in separate
  webhook request by utilising new webserver
* Improve tests for filter function
* Improve bake definition for easier CI integration

compose.example.yml

@@ -6,7 +6,10 @@ services:
     image: git.snrd.eu/sunred/discord-tweeter:latest
     container_name: discord-tweeter
     network_mode: bridge
+    ports:
+      - "127.0.0.1:8080:8080"
+      - "[::1]:8080:8080"
     volumes:
       - ./config.toml:/app/config.toml:ro
-      - ./db:/app/db:rw
+      - ./data:/app/data:rw
     restart: unless-stopped