Rewrote the server in cpp with the frontend in svelte

frontend/src/pages/Signup.svelte

@@ -0,0 +1,54 @@
+<script lang="ts">
+    import {Button, ButtonGroup, Card, Input, InputAddon} from 'flowbite-svelte';
+    import {Email, Password} from 'carbon-icons-svelte';
+    import {changeStateFunction, error_banner, info_banner, rpc, state, StateE, workingWrapperO} from '../store';
+
+    let username = '', username2 = '', password = '', password2 = '';
+
+    async function signup() {
+        error_banner.set('');
+        if (username != username2) {
+            error_banner.set('Email doesn\'t match');
+            return;
+        }
+        if (password != password2) {
+            error_banner.set('Password doesn\'t match');
+            return;
+        }
+
+        const resp = await workingWrapperO(() => rpc.Auth_signup(username, password));
+
+        if (resp) {
+            info_banner.set('Account created, please wait till an administrator approves it');
+            $state.s = StateE.LOGIN;
+        }
+    }
+
+    function keyUp(e: KeyboardEvent) {
+        if (e.key == 'Enter') signup();
+    }
+</script>
+
+<Card class="w-full max-w-lg">
+    <h3 class="mb-6">Sign in</h3>
+    <ButtonGroup class="w-full mb-2">
+        <InputAddon><Email /></InputAddon>
+        <Input type="email" placeholder="Email" bind:value={username} on:keyup={keyUp}></Input>
+    </ButtonGroup>
+    <ButtonGroup class="w-full mb-4">
+        <InputAddon><Email /></InputAddon>
+        <Input type="email" placeholder="Repeat email" bind:value={username2} on:keyup={keyUp}></Input>
+    </ButtonGroup>
+    <ButtonGroup class="w-full mb-2">
+        <InputAddon><Password /></InputAddon>
+        <Input type="password" placeholder="Password" bind:value={password} on:keyup={keyUp}></Input>
+    </ButtonGroup>
+    <ButtonGroup class="w-full mb-4">
+        <InputAddon><Password /></InputAddon>
+        <Input type="password" placeholder="Repeat password" bind:value={password2} on:keyup={keyUp}></Input>
+    </ButtonGroup>
+    <ButtonGroup class="w-full flex flex-nowrap">
+        <Button class="flex-1 flex-grow" color="primary" outline on:click={changeStateFunction(StateE.LOGIN)}>Login</Button>
+        <Button class="flex-1 flex-grow" color="primary" on:click={signup}>Singup</Button>
+    </ButtonGroup>
+</Card>