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

packages/domain/src/index.ts

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+export * from "./models"
+export * from "./utils"

packages/domain/src/models.ts

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+import { z } from "zod";
+
+export enum Attribute {
+    Strength = "Strength",
+    Power = "Power",
+    Endurance = "Endurance",
+    Agility = "Agility",
+}
+
+export enum Activity {
+    BackSquat = "BackSquat",
+    Deadlift = "Deadlift",
+    BenchPress = "BenchPress",
+    Run = "Run",
+    BroadJump = "BroadJump",
+    ConeDrill = "ConeDrill",
+}
+
+export enum Gender {
+    Male = "Male",
+    Female = "Female",
+}
+
+export const MetricsSchema = z.object({
+    age: z.number(),
+    weight: z.number(),
+    gender: z.enum(Gender),
+});
+
+export const PlayerSchema = z.object({
+    name: z.string().optional(),
+    metrics: MetricsSchema,
+});
+
+export const ActivityPerformanceSchema = z.object({
+    activity: z.enum(Activity),
+    performance: z.number(),
+});
+
+export type StandardUnit = "ms" | "cm" | "kg";
+
+export type Metrics = z.infer<typeof MetricsSchema>;
+export type Player = z.infer<typeof PlayerSchema>;
+export type ActivityPerformance = z.infer<typeof ActivityPerformanceSchema>;

packages/domain/src/utils.ts

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+export const lbToKg = (lb: number | string): number => +lb * 0.453592;
+export const kgToLb = (kg: number | string): number => +kg * 2.20462;
+
+export const minToMs = (min: number) => min * 60000;
+export const secToMs = (sec: number) => sec * 1000;
+export const msToMin = (ms: number) => ms / 60000;
+
+export const ftToCm = (ft: number) => ft * 30.48;
+export const inToCm = (inches: number) => inches * 2.54;
+export const cmToIn = (cm: number) => cm / 2.54;
+
+export const msToTime = (ms: number, includeMs = false): string => {
+    const minutes = Math.floor(ms / 60000);
+    const seconds = Math.floor((ms % 60000) / 1000);
+    const milliseconds = Math.floor(ms % 1000);
+
+    let formattedTime = `${minutes}:${seconds.toString().padStart(2, "0")}`;
+    if (includeMs) {
+        formattedTime += `.${milliseconds.toString().padStart(3, "0")}`;
+    }
+    return formattedTime;
+};
+
+export const range = (length: number) =>
+    Array.from({ length: length }, (_, i) => i);
+
+export const clamp = (x: number, lo: number, hi: number) =>
+    Math.max(lo, Math.min(hi, x));