Refactor Package structure

This commit cleans up the package structure, to make two new top-level
packages `internal` (for internal-use packages) and `pkg` (for general
shared utility code).

internal/component/web/web.go

@@ -0,0 +1,38 @@
+package web
+
+import (
+	"embed"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/component"
+)
+
+// Web implements the web component
+type Web struct {
+	component.ComponentBase
+}
+
+func (Web) Name() string {
+	return "web"
+}
+
+//go:embed all:stack
+//go:embed web.env
+var resources embed.FS
+
+func (web Web) Stack() component.Installable {
+	HTTPS_METHOD := "nohttp"
+	if web.Config.HTTPSEnabled() {
+		HTTPS_METHOD = "redirect"
+	}
+
+	return web.MakeStack(component.Installable{
+		Resources:   resources,
+		ContextPath: "stack",
+		EnvPath:     "web.env",
+
+		EnvContext: map[string]string{
+			"DEFAULT_HOST": web.Config.DefaultDomain,
+			"HTTPS_METHOD": HTTPS_METHOD,
+		},
+	})
+}