updated db schema for attachments + add create user api endpoint

schema.sql

@@ -3,6 +3,7 @@ CREATE TABLE IF NOT EXISTS "messages" (
 	"user" INTEGER NOT NULL,
 	"thread" INTEGER NOT NULL,
 	"content" TEXT NOT NULL,
+	"time" INTEGER NOT NULL,
 	PRIMARY KEY("id"),
 	FOREIGN KEY ("user") REFERENCES "users"("id")
 	ON UPDATE NO ACTION ON DELETE NO ACTION,
@@ -13,6 +14,7 @@ CREATE TABLE IF NOT EXISTS "messages" (
 CREATE TABLE IF NOT EXISTS "users" (
 	"id" INTEGER NOT NULL UNIQUE,
 	"name" TEXT NOT NULL,
+	"passhash" TEXT NOT NULL,
 	PRIMARY KEY("id")
 );
 
@@ -41,3 +43,11 @@ CREATE TABLE IF NOT EXISTS "threads" (
 	ON UPDATE NO ACTION ON DELETE NO ACTION
 );
 
+CREATE TABLE IF NOT EXISTS "attachments" (
+	"id" INTEGER NOT NULL UNIQUE,
+	"message_id" INTEGER NOT NULL,
+	"file_path" TEXT NOT NULL,
+	PRIMARY KEY("id"),
+	FOREIGN KEY ("message_id") REFERENCES "messages"("id")
+	ON UPDATE NO ACTION ON DELETE NO ACTION
+);