FinanceBuddy: per-board opt-in gate on Integrations page (v0.3) new files Helper Template

Template/project/integration.php

@@ -0,0 +1,20 @@
+<h3><i class="fa fa-money fa-fw" aria-hidden="true"></i> <?= t('FinanceBuddy') ?></h3>
+<div class="listing">
+    <?php /* Hidden 0 before the checkbox so unchecking posts a value (a bare unchecked box posts
+             nothing, which would leave a stale 1). The checkbox's 1 wins when checked. The shared
+             Integrations form saves this straight into project metadata. */ ?>
+    <input type="hidden" name="<?= \Kanboard\Plugin\FinanceBuddy\Helper\FinanceHelper::ENABLED_KEY ?>" value="0">
+    <?= $this->form->checkbox(
+        \Kanboard\Plugin\FinanceBuddy\Helper\FinanceHelper::ENABLED_KEY,
+        t('Enable FinanceBuddy on this board'),
+        1,
+        isset($values['financebuddy_enabled']) && $values['financebuddy_enabled'] == 1
+    ) ?>
+    <p class="form-help">
+        <?= t('When enabled, cards on this board can carry a money value (debit or credit, with optional installments), shown on the card and totalled per column. Boards left disabled are unaffected.') ?>
+    </p>
+</div>
+
+<div class="form-actions">
+    <button type="submit" class="btn btn-blue"><?= t('Save') ?></button>
+</div>