refactor: rework file structure (#325)

* wip: add middlewares

* refactor: use context fom middleware in handlers

* refactor: use controller approach in handlers

* refactor: move oauth providers into services (non-working)

* feat: create oauth broker service

* refactor: use a boostrap service to bootstrap the app

* refactor: split utils into smaller files

* refactor: use more clear name for frontend assets

* feat: allow customizability of resources dir

* fix: fix typo in ui middleware

* fix: validate resource file paths in ui middleware

* refactor: move resource handling to a controller

* feat: add some logging

* fix: configure middlewares before groups

* fix: use correct api path in login mutation

* fix: coderabbit suggestions

* fix: further coderabbit suggestions

internal/utils/string_utils.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"strings"
+)
+
+func Capitalize(str string) string {
+	if len(str) == 0 {
+		return ""
+	}
+	return strings.ToUpper(string([]rune(str)[0])) + string([]rune(str)[1:])
+}
+
+func CoalesceToString(value any) string {
+	switch v := value.(type) {
+	case []any:
+		strs := make([]string, 0, len(v))
+		for _, item := range v {
+			if str, ok := item.(string); ok {
+				strs = append(strs, str)
+				continue
+			}
+		}
+		return strings.Join(strs, ",")
+	case string:
+		return v
+	default:
+		return ""
+	}
+}