refactor water me service

remove "text-based-feature"
improve messages service interface
implement more features for fluxer

core/src/lib/common.ts

@@ -0,0 +1,20 @@
+export type BaseMessage = {
+	content: string;
+};
+
+export type BaseChannel = {
+	id: string;
+};
+
+export type BaseUser = {
+	id: string;
+};
+
+export type BaseCreateMessage =
+	| {
+			content?: string;
+			embeds?: unknown[] | null;
+			attachments?: unknown[] | null;
+			files?: unknown[] | null;
+	  }
+	| string;