Add initial PIS route

src/modules/pis.ts

@@ -0,0 +1,14 @@
+import type { ApiPisObject } from '@owlboard/api-schema-types';
+import type { BaseClient, ApiResult } from '../lib/base.js';
+
+export class PisModule {
+    constructor(private client: BaseClient) {}
+
+    async getByStartEndCrs(startCrs: string, endCrs: string): Promise<ApiResult<ApiPisObject.PisObjects>> {
+        const path = `/pis/route/${encodeURIComponent(startCrs.toUpperCase())}/${encodeURIComponent(endCrs.toUpperCase())}`;
+
+        return this.client.request<ApiPisObject.PisObjects>(path, {
+            method: 'GET',
+        });
+    }
+}