feat(installation): add installation entry form and pages

- Create new installation entry form component with validation
- Add installation list and add pages with basic routing
- Implement custom select component for encounter class selection
- Update SelectTrigger styling for better icon positioning

app/components/flow/installation/entry.vue

@@ -0,0 +1,71 @@
+<script setup lang="ts">
+import * as z from 'zod'
+import Action from '~/components/pub/custom-ui/nav-footer/ba-su.vue'
+
+const { errors, setFromZodError, clearErrors } = useFormErrors()
+
+const data = ref({
+  code: '',
+  name: '',
+  encounterClassCode: '',
+})
+
+const installation = {
+  msg: {
+    placeholder: '---pilih encounter class (fhir7)',
+  },
+  items: [
+    { value: '1', label: 'Ambulatory', code: 'AMB' },
+    { value: '2', label: 'Inpatient', code: 'IMP' },
+    { value: '3', label: 'Emergency', code: 'EMER' },
+    { value: '4', label: 'Observation', code: 'OBSENC' },
+    { value: '5', label: 'Pre-admission', code: 'PRENC' },
+    { value: '6', label: 'Short Stay', code: 'SS' },
+    { value: '7', label: 'Virtual', code: 'VR' },
+    { value: '8', label: 'Home Health', code: 'HH' },
+  ],
+}
+
+const schema = z.object({
+  name: z.string().min(1, 'Nama instalasi harus diisi'),
+  code: z.string().min(1, 'Kode instalasi harus diisi'),
+  encounterClassCode: z.string().min(1, 'Kelompok encounter class harus dipilih'),
+})
+
+function onClick(type: string) {
+  if (type === 'cancel') {
+    navigateTo('/org-src/instalasion')
+  } else if (type === 'draft') {
+    // do something
+  } else if (type === 'submit') {
+    // Clear previous errors
+    clearErrors()
+
+    const requestData = schema.safeParse(data.value)
+    if (!requestData.success) {
+      // Set errors menggunakan composable
+      setFromZodError(requestData.error)
+
+      // Optional: tampilkan toast notification untuk error general
+      console.warn('Form validation failed:', requestData.error)
+      return
+    }
+
+    console.log('Form data valid:', requestData.data)
+    // do something with valid data
+  }
+}
+</script>
+
+<template>
+  <div class="mb-5 border-b border-b-slate-300 pb-3 text-lg xl:text-xl">
+    <Icon name="i-lucide-user" class="me-2" />
+    <span class="font-semibold">Tambah</span> Instalasi
+  </div>
+  <div>
+    <AppInstallationEntryForm v-model="data" :errors="errors" :encounter-class-code="installation" />
+  </div>
+  <div class="my-2 flex justify-end py-2">
+    <Action @click="onClick" />
+  </div>
+</template>