Move domain models into domain package with schemas and validate with zod + elysia. Some maintenence as well

apps/portal/src/lib/components/PlayersTable.svelte

@@ -1,16 +1,18 @@
 <script lang="ts">
     import {
         LevelCalculator,
+        type LevelCalculatorOutput,
+        type Standards,
+    } from "@blade-and-brawn/calculator";
+    import {
         Activity,
         Attribute,
         Gender,
         lbToKg,
         range,
-        type LevelCalculatorOutput,
-        type Standards,
         type ActivityPerformance,
         type Player,
-    } from "@blade-and-brawn/calculator";
+    } from "@blade-and-brawn/domain";
 
     interface CalcData {
         levels?: LevelCalculatorOutput;

apps/portal/src/lib/components/StandardsTable.svelte

@@ -1,14 +1,16 @@
 <script lang="ts">
     import {
         Standards,
+        type Standard,
+        type StandardsConfig,
+    } from "@blade-and-brawn/calculator";
+    import {
         Activity,
         cmToIn,
         kgToLb,
         range,
         type Metrics,
-        type Standard,
-        type StandardsConfig,
-    } from "@blade-and-brawn/calculator";
+    } from "@blade-and-brawn/domain";
 
     interface Props {
         allStandards: Standards;

apps/portal/src/routes/calculator/+page.svelte

@@ -1,13 +1,15 @@
 <script lang="ts">
     import {
-        Activity,
         DEFAULT_STANDARDS_DATA,
-        Gender,
-        lbToKg,
         Standards,
-        type Metrics,
         type StandardsConfig,
     } from "@blade-and-brawn/calculator";
+    import {
+        Activity,
+        Gender,
+        lbToKg,
+        type Metrics,
+    } from "@blade-and-brawn/domain";
     import StandardsTable from "$lib/components/StandardsTable.svelte";
     import PlayersTable from "$lib/components/PlayersTable.svelte";
 
@@ -15,6 +17,7 @@
 
     const defaultStandards = new Standards(DEFAULT_STANDARDS_DATA);
 
+    // TODO: try to clean this up
     let input = $state({
         activity: Activity.BenchPress,
         metrics: {