feat: add option to focus title bar after creating note from template

[sh1vam31]

Closes #67

After creating a note or to-do from a template, the cursor was always placed in the note body. This adds an option to automatically move the cursor to the title bar instead, so users can immediately type the note title.

Changes

Added a new plugin setting:

Tools → Templates → "Focus title bar after creating a note from template"

• When ON: cursor moves to the title bar after note creation
• When OFF (default): existing behavior — cursor stays in note body

Implementation

• New setting: src/settings/focusTitleAfterCreate.ts
• After openNote, executes joplin.commands.execute("focusElement", "noteTitle")
• if the setting is enabled. Wrapped in try/catch for graceful fallback on older Joplin versions.

Testing

1. Enabled the setting in Preferences → Templates
2. Created a note via Tools → Templates → Create note from template
3. Cursor moved to title bar automatically
4. Disabled the setting → cursor stayed in note body