style: fix code formatting inconsistencies

- Remove excessive blank lines (triple+ newlines reduced to double)
- Fix EditorConfig indent_size from 4 to 2 spaces to match Prettier
- Ensure consistent whitespace formatting across JavaScript/TypeScript files
- Clean up formatting in templates (HBS files)

Files affected:
- src/apps/actor/base-sheet.js: Remove 6 instances of triple+ blank lines
- src/apps/item-sheet.js: Remove 4 instances of triple+ blank lines
- src/apps/ruler/token-ruler.js: Remove 1 instance of triple+ blank lines
- src/hooks/hooks.ts: Remove 1 instance of triple+ blank lines
- templates/sheets/actor/*.hbs: Remove excessive blank lines
- .editorconfig: Fix indent_size to match Prettier tabWidth (2 spaces)

templates/sheets/actor/creature-sheet.hbs

@@ -12,7 +12,6 @@ SPDX-License-Identifier: MIT
     {{> systems/ds4/templates/sheets/actor/components/creature-properties.hbs}}
     {{/systems/ds4/templates/sheets/actor/components/actor-header.hbs}}
 
-
     {{!-- Sheet Tab Navigation --}}
     <nav class="ds4-sheet-tab-nav" data-group="primary">
         <a class="ds4-sheet-tab-nav__item" data-action="changeTab" data-tab="values">{{localize 'DS4.HeadingValues'}}</a>

templates/sheets/actor/limited-sheet.hbs

@@ -9,7 +9,6 @@ SPDX-License-Identifier: MIT
     {{#> systems/ds4/templates/sheets/actor/components/actor-header.hbs}}
     {{/systems/ds4/templates/sheets/actor/components/actor-header.hbs}}
 
-
     {{!-- Sheet Body --}}
     <section class="ds4-sheet-body">
         {{#if (eq data.type 'character')}}

templates/sheets/actor/tabs/spells.hbs

@@ -40,10 +40,8 @@ titleKey=titleKey}}
 titleKey=titleKey}}
 {{/inline}}
 
-
 {{!-- ======================================================================== --}}
 
-
 <div class="ds4-sheet-tab tab spells" data-group="primary" data-tab="spells">
     {{#unless (isEmpty itemsByType.spell)}}
     <ol class="ds4-embedded-document-list ds4-embedded-document-list--spell item-list">