Add basic components for Product CRUD

more specifically at this point, for product lookup via scanner

src/components/products/ByjoveProduct.vue

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+<template>
+  <byjove-model-crud model-name="Product"
+                     :allow-edit="allowEdit"
+                     :mode="mode"
+                     @refresh="record => { product = record }">
+
+    <div style="display: flex; justify-content: space-between; margin-bottom: 0.5rem;">
+
+      <b-field label="Item ID">
+        <b-input v-if="mode == 'creating' || mode == 'editing'"
+                 v-model="product.item_id">
+        </b-input>
+        <span v-if="mode == 'viewing' || mode == 'deleting'">
+          {{ product.item_id }}
+        </span>
+      </b-field>
+
+      <img :src="product.image_url" />
+    </div>
+
+    <b-collapse class="card"
+                animation="slide"
+                :open="false"
+                aria-id="contentIdForVendors">
+
+      <template #trigger="props">
+        <div class="card-header"
+             role="button"
+             aria-controls="contentIdForVendors"
+             :aria-expanded="props.open">
+          <p class="card-header-title">
+            Vendors
+          </p>
+          <a class="card-header-icon">
+            <b-icon pack="fas"
+                    :icon="props.open ? 'angle-down' : 'angle-up'">
+            </b-icon>
+          </a>
+        </div>
+      </template>
+
+      <div class="card-content">
+        <div class="content">
+
+          <b-field label="Preferred Vendor">
+            {{ product.vendor_name }} @ {{ product.default_unit_cost_display }}
+          </b-field>
+
+          <b-table :data="product.costs">
+            <b-table-column label="Vendor"
+                            field="vendor_name"
+                            v-slot="props">
+              {{ props.row.vendor_name }}
+            </b-table-column>
+            <b-table-column label="Unit Cost"
+                            field="unit_cost"
+                            v-slot="props">
+              {{ props.row.unit_cost }}
+            </b-table-column>
+          </b-table>
+
+        </div>
+      </div>
+    </b-collapse>
+
+  </byjove-model-crud>
+</template>
+
+<script>
+import ByjoveModelCrud from '../model-crud'
+
+export default {
+    name: 'Product',
+    props: {
+        mode: String,
+        allowEdit: {
+            type: Boolean,
+            default: false,
+        },
+    },
+    components: {
+        ByjoveModelCrud,
+    },
+    data: function() {
+        return {
+            product: {},
+        }
+    },
+}
+</script>

src/components/products/ByjoveProducts.vue

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+<template>
+  <byjove-model-index model-name="Product"
+                      :want-initial-results="wantInitialResults"
+                      :allow-create="allowCreate">
+
+    <byjove-scanner-input @submit="scannerSubmit">
+    </byjove-scanner-input>
+
+  </byjove-model-index>
+</template>
+
+<script>
+import ByjoveModelIndex from '../model-index'
+import ByjoveScannerInput from '../scanner-input'
+
+export default {
+    name: 'ByjoveProducts',
+    components: {
+        ByjoveModelIndex,
+        ByjoveScannerInput,
+    },
+    props: {
+        wantInitialResults: {
+            type: Boolean,
+            default: false,
+        },
+        allowCreate: {
+            type: Boolean,
+            default: false,
+        },
+    },
+    methods: {
+
+        scannerSubmit(entry) {
+            let url = '/api/products/quick-lookup'
+            let params = {entry: entry}
+            this.$http.get(url, {params: params}).then(response => {
+                if (response.data.error) {
+                    this.$buefy.toast.open({
+                        message: response.data.error,
+                        type: 'is-danger',
+                    })
+                } else {
+                    this.$router.push(`/products/${response.data.product.uuid}`)
+                }
+            }, response => {
+                this.$buefy.toast.open({
+                    message: "Unknown error!",
+                    type: 'is-danger',
+                })
+            })
+        },
+    },
+}
+</script>

src/components/products/index.js

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+import ByjoveProducts from './ByjoveProducts'
+import ByjoveProduct from './ByjoveProduct'
+
+export {
+    ByjoveProducts,
+    ByjoveProduct,
+}