update docs and add tests

docs/12.features/4.reply-keyboards.md

@@ -161,6 +161,19 @@ $keyboard = ReplyKeyboard::make()
     ->selective();
 ```
 
+## Setting a keyboard as persistent
+
+A keyboard can be set as always visible when the regular keyboard is hidden (more info in telegram [docs](https://core.telegram.org/bots/api#replykeyboardmarkup)). 
+
+```php
+use DefStudio\Telegraph\Keyboard\ReplyKeyboard;
+
+$keyboard = ReplyKeyboard::make()
+    ->button('Send Contact')->requestContact()
+    ->button('Send Location')->requestLocation()
+    ->persistent();
+```
+
 ## Removing a keyboard
 
 A reply keyboard can be removed from clients with this call:

src/Keyboard/ReplyKeyboard.php

@@ -17,7 +17,7 @@ class ReplyKeyboard implements Arrayable
     protected Collection $buttons;
 
     protected bool $rtl = false;
-    protected bool $isPersistent = false;
+    protected bool $persistent = false;
     protected bool $resize = false;
     protected bool $oneTime = false;
     protected bool $selective = false;
@@ -97,11 +97,11 @@ public static function fromArray(array $arrayKeyboard): self
         return $keyboard;
     }
 
-    public function isPersistent(bool $isPersistent = true): self
+    public function persistent(bool $isPersistent = true): self
     {
         $clone = $this->clone();
 
-        $clone->isPersistent = $isPersistent;
+        $clone->persistent = $isPersistent;
 
         return $clone;
     }
@@ -283,7 +283,7 @@ public function toArray(): array
     public function options(): array
     {
         return array_filter([
-            'is_persistent' => $this->isPersistent,
+            'is_persistent' => $this->persistent,
             'resize_keyboard' => $this->resize,
             'one_time_keyboard' => $this->oneTime,
             'selective' => $this->selective,

tests/.pest/snapshots/Unit/Concerns/ManagesKeyboardsTest/it_can_attach_a_persistent_reply_keyboard.snap

@@ -0,0 +1,20 @@
+{
+    "url": "https:\/\/api.telegram.org\/bot3f3814e1-5836-3d77-904e-60f64b15df36\/sendMessage",
+    "payload": {
+        "text": "foobar",
+        "chat_id": "-123456789",
+        "parse_mode": "html",
+        "reply_markup": {
+            "keyboard": [
+                [
+                    {
+                        "text": "foo",
+                        "request_contact": true
+                    }
+                ]
+            ],
+            "is_persistent": true
+        }
+    },
+    "files": []
+}

tests/Unit/Concerns/ManagesKeyboardsTest.php

@@ -107,6 +107,13 @@
     })->toMatchTelegramSnapshot();
 });
 
+it('can attach a persistent reply keyboard', function () {
+    expect(function (Telegraph $telegraph) {
+        return $telegraph->html('foobar')
+            ->replyKeyboard(fn (ReplyKeyboard $keyboard) => $keyboard->button('foo')->requestContact()->persistent());
+    })->toMatchTelegramSnapshot();
+});
+
 it('can force a reply', function () {
     expect(function (Telegraph $telegraph) {
         return $telegraph->message('foobar')->forceReply();