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

cmd/tweeter/embed.go

@@ -0,0 +1,116 @@
+package tweeter
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type Embed struct {
+	Author      Author  `json:"author,omitempty"`
+	Title       string  `json:"title,omitempty"`
+	URL         string  `json:"url,omitempty"`
+	Description string  `json:"description,omitempty"`
+	Timestamp   string  `json:"timestamp,omitempty"`
+	Color       int64   `json:"color,omitempty"`
+	Fields      []Field `json:"fields,omitempty"`
+	Thumbnail   Image   `json:"thumbnail,omitempty"`
+	Image       Image   `json:"image,omitempty"`
+	Video       Video   `json:"video,omitempty"`
+	Footer      Footer  `json:"footer,omitempty"`
+}
+
+type Author struct {
+	Name    string `json:"name"`
+	URL     string `json:"url"`
+	IconURL string `json:"icon_url"`
+}
+
+type Field struct {
+	Name   string `json:"name"`
+	Value  string `json:"value"`
+	Inline bool   `json:"inline,omitempty"`
+}
+
+type Footer struct {
+	Text    string `json:"text"`
+	IconURL string `json:"icon_url,omitempty"`
+}
+
+type Image struct {
+	URL string `json:"url"`
+}
+
+type Video struct {
+	URL string `json:"url"`
+}
+
+func (w *Webhook) NewEmbedWithURL(URL string) *Embed {
+	emb := Embed{URL: URL}
+	w.Embeds = append(w.Embeds, &emb)
+	return &emb
+}
+
+func (w *Webhook) NewEmbed() *Embed {
+	emb := Embed{}
+	w.Embeds = append(w.Embeds, &emb)
+	return &emb
+}
+
+func (e *Embed) SetTitle(Title string) *Embed {
+	e.Title = Title
+	return e
+}
+
+func (e *Embed) SetText(Description string) *Embed {
+	e.Description = Description
+	return e
+}
+
+func (e *Embed) SetAuthor(Name, URL, IconURL string) *Embed {
+	e.Author = Author{Name, URL, IconURL}
+	return e
+}
+
+func (e *Embed) SetColor(color string) (*Embed, error) {
+	color = strings.Replace(color, "0x", "", -1)
+	color = strings.Replace(color, "0X", "", -1)
+	color = strings.Replace(color, "#", "", -1)
+	colorInt, err := strconv.ParseInt(color, 16, 64)
+	if err != nil {
+		return nil, errors.New("invalid hex code passed")
+	}
+	e.Color = colorInt
+	return e, nil
+}
+
+func (e *Embed) SetThumbnail(URL string) *Embed {
+	e.Thumbnail = Image{URL}
+	return e
+}
+
+func (e *Embed) SetImage(URL string) *Embed {
+	e.Image = Image{URL}
+	return e
+}
+
+func (e *Embed) SetVideo(URL string) *Embed {
+	e.Video = Video{URL}
+	return e
+}
+
+func (e *Embed) SetFooter(Text, IconURL string) *Embed {
+	e.Footer = Footer{Text, IconURL}
+	return e
+}
+
+func (e *Embed) SetTimestamp(timestamp time.Time) *Embed {
+	e.Timestamp = timestamp.Format(time.RFC3339)
+	return e
+}
+
+func (e *Embed) AddField(Name, Value string, Inline bool) *Embed {
+	e.Fields = append(e.Fields, Field{Name, Value, Inline})
+	return e
+}