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

main.go

@@ -1,8 +1,9 @@
 package main
 
 import (
-	"git.snrd.eu/sunred/discord-tweeter/cmd"
 	"log"
+
+	"git.snrd.eu/sunred/discord-tweeter/cmd/tweeter"
 )
 
 var (
@@ -11,5 +12,5 @@ var (
 
 func main() {
 	log.SetPrefix(prefix)
-	cmd.Run()
+	tweeter.Run()
 }