[IMP] *: introduce data-hotkey on form and modal views

Define `data-hotkey` on most used action buttons.

For the modals, the following keys are dedicated for "special"
actions:
 - Alt+G: add
 - Alt+V: save
 - Alt+Z: cancel

closes odoo/odoo#73275

Taskid: 2588233
Related: odoo/enterprise#19464
Signed-off-by: Kevin Baptiste <kba@odoo.com>

addons/hr_gamification/wizard/gamification_badge_user_wizard_views.xml

@@ -30,8 +30,8 @@
                         <field name="comment" nolabel="1" placeholder="Describe what they did and why it matters (will be public)" />
                     </group>
                     <footer>
-                        <button string="Reward Employee" type="object" name="action_grant_badge" class="btn-primary" />
-                        <button string="Cancel" special="cancel" class="btn-secondary"/>
+                        <button string="Reward Employee" type="object" name="action_grant_badge" class="btn-primary" data-hotkey="q"/>
+                        <button string="Cancel" special="cancel" data-hotkey="z" class="btn-secondary"/>
                     </footer>
                 </form>
             </field>