Select Color: Document and Color books tabs

Document tab: every concrete colour the drawing uses (objects, block
definitions and layers), found in one pass when the panel opens, as a
grid of swatches sortable by recently used, most used, colour and colour
number. The recently-used list is now kept per drawing, so the ribbon's
Recent row shows this drawing's colours.

Color books tab: load AutoCAD .acb colour books (remembered in the
settings on desktop), browse them page by page with the page strip,
search by name and see the RGB equivalent. A book colour is applied as
RGB plus its BOOK$NAME identity on objects and layers instead of
dropping the name.

Strings translated into all 22 locales.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013rGmDUNr1hUf4zo1X3dak8

locales/lo-LA/opencadstudio.ftl

@@ -1349,6 +1349,21 @@ common =
     .color-hex = Hex
     .nearest-index-color = ດັດຊະນີທີ່ໃກ້ທີ່ສຸດ
     .exact-index-match = ກົງກັບດັດຊະນີພໍດີ
+    .color-recently-used = ໃຊ້ຫຼ້າສຸດ
+    .color-most-used = ໃຊ້ຫຼາຍທີ່ສຸດ
+    .color-number = ເລກສີ
+    .color-in-drawing = ສີໃນແບບແຕ້ມນີ້
+    .color-sort = ຈັດລຽງ
+    .color-no-drawing-colors = ຍັງບໍ່ມີສີໃນແບບແຕ້ມນີ້
+    .color-books = ປຶ້ມສີ
+    .color-no-books = ບໍ່ໄດ້ໂຫຼດປຶ້ມສີ
+    .color-load-book = ໂຫຼດປຶ້ມສີ (.acb)
+    .color-book-label = ປຶ້ມສີ
+    .color-rgb-equivalent = ທຽບເທົ່າ RGB
+    .color-no-match = ບໍ່ມີສີທີ່ກົງກັນ
+    .color-not-a-book = ບໍ່ແມ່ນປຶ້ມສີ
+    .color-book-encrypted = ປຶ້ມສີນີ້ຖືກເຂົ້າລະຫັດ ແລະອ່ານບໍ່ໄດ້
+    .color-book-empty = ປຶ້ມສີບໍ່ມີສີ
     .cad-color-index-aci-10-249 = CAD Color Index (ACI) 10–249
     .grayscale-250-255 = ລະດັບສີເທົາ 250–255
     .isometric-drafting = ການຂຽນແບບໄອໂຊເມຕຣິກ