Add Unicode braille support (#14548)

Fixes #13778
Supersedes #13777

Summary of the issue:
If Unicode braille occurs within text — for instance, ⠐⠣⠃⠗⠇⠐⠜ says "(braille)" in UEB — NVDA currently just skips over the braille entirely. This is because it is not included in symbols.dic

Description of user facing changes
Unicode braille symbols are now announced.

source/locale/en/symbols.dic

@@ -1,7 +1,6 @@
-#locale/en/symbols.dic
-#A part of NonVisual Desktop Access (NVDA)
-#Copyright (c) 2011-2017 NVDA Contributors
-#This file is covered by the GNU General Public License.
+# A part of NonVisual Desktop Access (NVDA)
+# Copyright (c) 2011-2023 NVDA Contributors
+# This file is covered by the GNU General Public License.
 
 complexSymbols:
 # identifier	regexp
@@ -360,3 +359,263 @@ _	line	most
 
 # Miscellaneous Technical
 ⌘	mac Command key	none
+
+## 6-dot cell
+### note: the character on the next line is U+2800 (braille space), not U+0020 (ASCII space)
+⠀	space
+⠁	braille 1
+⠂	braille 2
+⠃	braille 1 2
+⠄	braille 3
+⠅	braille 1 3
+⠆	braille 2 3
+⠇	braille 1 2 3
+⠈	braille 4
+⠉	braille 1 4
+⠊	braille 2 4
+⠋	braille 1 2 4
+⠌	braille 3 4
+⠍	braille 1 3 4
+⠎	braille 2 3 4
+⠏	braille 1 2 3 4
+⠐	braille 5
+⠑	braille 1 5
+⠒	braille 2 5
+⠓	braille 1 2 5
+⠔	braille 3 5
+⠕	braille 1 3 5
+⠖	braille 2 3 5
+⠗	braille 1 2 3 5
+⠘	braille 4 5
+⠙	braille 1 4 5
+⠚	braille 2 4 5
+⠛	braille 1 2 4 5
+⠜	braille 3 4 5
+⠝	braille 1 3 4 5
+⠞	braille 2 3 4 5
+⠟	braille 1 2 3 4 5
+⠠	braille 6
+⠡	braille 1 6
+⠢	braille 2 6
+⠣	braille 1 2 6
+⠤	braille 3 6
+⠥	braille 1 3 6
+⠦	braille 2 3 6
+⠧	braille 1 2 3 6
+⠨	braille 4 6
+⠩	braille 1 4 6
+⠪	braille 2 4 6
+⠫	braille 1 2 4 6
+⠬	braille 3 4 6
+⠭	braille 1 3 4 6
+⠮	braille 2 3 4 6
+⠯	braille 1 2 3 4 6
+⠰	braille 5 6
+⠱	braille 1 5 6
+⠲	braille 2 5 6
+⠳	braille 1 2 5 6
+⠴	braille 3 5 6
+⠵	braille 1 3 5 6
+⠶	braille 2 3 5 6
+⠷	braille 1 2 3 5 6
+⠸	braille 1 2 3
+⠹	braille 1 4 5 6
+⠺	braille 2 4 5 6
+⠻	braille 1 2 4 5 6
+⠼	braille 3 4 5 6
+⠽	braille 1 3 4 5 6
+⠾	braille 2 3 4 5 6
+⠿	braille 1 2 3 4 5 6
+## 8-braille cell
+⡀	braille 7
+⡁	braille 1 7
+⡂	braille 2 7
+⡃	braille 1 2 7
+⡄	braille 3 7
+⡅	braille 1 3 7
+⡆	braille 2 3 7
+⡇	braille 1 2 3 7
+⡈	braille 4 7
+⡉	braille 1 4 7
+⡊	braille 2 4 7
+⡋	braille 1 2 4 7
+⡌	braille 3 4 7
+⡍	braille 1 3 4 7
+⡎	braille 2 3 4 7
+⡏	braille 1 2 3 4 7
+⡐	braille 5 7
+⡑	braille 1 5 7
+⡒	braille 2 5 7
+⡓	braille 1 2 5 7
+⡔	braille 3 5 7
+⡕	braille 1 3 5 7
+⡖	braille 2 3 5 7
+⡗	braille 1 2 3 5 7
+⡘	braille 4 5 7
+⡙	braille 1 4 5 7
+⡚	braille 2 4 5 7
+⡛	braille 1 2 4 5 7
+⡜	braille 3 4 5 7
+⡝	braille 1 3 4 5 7
+⡞	braille 2 3 4 5 7
+⡟	braille 1 2 3 4 5 7
+⡠	braille 6 7
+⡡	braille 1 6 7
+⡢	braille 2 6 7
+⡣	braille 1 2 6 7
+⡤	braille 3 6 7
+⡥	braille 1 3 6 7
+⡦	braille 2 3 6 7
+⡧	braille 1 2 3 6 7
+⡨	braille 4 6 7
+⡩	braille 1 4 6 7
+⡪	braille 2 4 6 7
+⡫	braille 1 2 4 6 7
+⡬	braille 3 4 6 7
+⡭	braille 1 3 4 6 7
+⡮	braille 2 3 4 6 7
+⡯	braille 1 2 3 4 6 7
+⡰	braille 5 6 7
+⡱	braille 1 5 6 7
+⡲	braille 2 5 6 7
+⡳	braille 1 2 5 6 7
+⡴	braille 3 5 6 7
+⡵	braille 1 3 5 6 7
+⡶	braille 2 3 5 6 7
+⡷	braille 1 2 3 5 6 7
+⡸	braille 1 2 3 7
+⡹	braille 1 4 5 6 7
+⡺	braille 2 4 5 6 7
+⡻	braille 1 2 4 5 6 7
+⡼	braille 3 4 5 6 7
+⡽	braille 1 3 4 5 6 7
+⡾	braille 2 3 4 5 6 7
+⡿	braille 1 2 3 4 5 6 7
+⢀	braille 8
+⢁	braille 1 8
+⢂	braille 2 8
+⢃	braille 1 2 8
+⢄	braille 3 8
+⢅	braille 1 3 8
+⢆	braille 2 3 8
+⢇	braille 1 2 3 8
+⢈	braille 4 8
+⢉	braille 1 4 8
+⢊	braille 2 4 8
+⢋	braille 1 2 4 8
+⢌	braille 3 4 8
+⢍	braille 1 3 4 8
+⢎	braille 2 3 4 8
+⢏	braille 1 2 3 4 8
+⢐	braille 5 8
+⢑	braille 1 5 8
+⢒	braille 2 5 8
+⢓	braille 1 2 5 8
+⢔	braille 3 5 8
+⢕	braille 1 3 5 8
+⢖	braille 2 3 5 8
+⢗	braille 1 2 3 5 8
+⢘	braille 4 5 8
+⢙	braille 1 4 5 8
+⢚	braille 2 4 5 8
+⢛	braille 1 2 4 5 8
+⢜	braille 3 4 5 8
+⢝	braille 1 3 4 5 8
+⢞	braille 2 3 4 5 8
+⢟	braille 1 2 3 4 5 8
+⢠	braille 6 8
+⢡	braille 1 6 8
+⢢	braille 2 6 8
+⢣	braille 1 2 6 8
+⢤	braille 3 6 8
+⢥	braille 1 3 6 8
+⢦	braille 2 3 6 8
+⢧	braille 1 2 3 6 8
+⢨	braille 4 6 8
+⢩	braille 1 4 6 8
+⢪	braille 2 4 6 8
+⢫	braille 1 2 4 6 8
+⢬	braille 3 4 6 8
+⢭	braille 1 3 4 6 8
+⢮	braille 2 3 4 6 8
+⢯	braille 1 2 3 4 6 8
+⢰	braille 5 6 8
+⢱	braille 1 5 6 8
+⢲	braille 2 5 6 8
+⢳	braille 1 2 5 6 8
+⢴	braille 3 5 6 8
+⢵	braille 1 3 5 6 8
+⢶	braille 2 3 5 6 8
+⢷	braille 1 2 3 5 6 8
+⢸	braille 1 2 3 8
+⢹	braille 1 4 5 6 8
+⢺	braille 2 4 5 6 8
+⢻	braille 1 2 4 5 6 8
+⢼	braille 3 4 5 6 8
+⢽	braille 1 3 4 5 6 8
+⢾	braille 2 3 4 5 6 8
+⢿	braille 1 2 3 4 5 6 8
+⣀	braille 7 8
+⣁	braille 1 7 8
+⣂	braille 2 7 8
+⣃	braille 1 2 7 8
+⣄	braille 3 7 8
+⣅	braille 1 3 7 8
+⣆	braille 2 3 7 8
+⣇	braille 1 2 3 7 8
+⣈	braille 4 7 8
+⣉	braille 1 4 7 8
+⣊	braille 2 4 7 8
+⣋	braille 1 2 4 7 8
+⣌	braille 3 4 7 8
+⣍	braille 1 3 4 7 8
+⣎	braille 2 3 4 7 8
+⣏	braille 1 2 3 4 7 8
+⣐	braille 5 7 8
+⣑	braille 1 5 7 8
+⣒	braille 2 5 7 8
+⣓	braille 1 2 5 7 8
+⣔	braille 3 5 7 8
+⣕	braille 1 3 5 7 8
+⣖	braille 2 3 5 7 8
+⣗	braille 1 2 3 5 7 8
+⣘	braille 4 5 7 8
+⣙	braille 1 4 5 7 8
+⣚	braille 2 4 5 7 8
+⣛	braille 1 2 4 5 7 8
+⣜	braille 3 4 5 7 8
+⣝	braille 1 3 4 5 7 8
+⣞	braille 2 3 4 5 7 8
+⣟	braille 1 2 3 4 5 7 8
+⣠	braille 6 7 8
+⣡	braille 1 6 7 8
+⣢	braille 2 6 7 8
+⣣	braille 1 2 6 7 8
+⣤	braille 3 6 7 8
+⣥	braille 1 3 6 7 8
+⣦	braille 2 3 6 7 8
+⣧	braille 1 2 3 6 7 8
+⣨	braille 4 6 7 8
+⣩	braille 1 4 6 7 8
+⣪	braille 2 4 6 7 8
+⣫	braille 1 2 4 6 7 8
+⣬	braille 3 4 6 7 8
+⣭	braille 1 3 4 6 7 8
+⣮	braille 2 3 4 6 7 8
+⣯	braille 1 2 3 4 6 7 8
+⣰	braille 5 6 7 8
+⣱	braille 1 5 6 7 8
+⣲	braille 2 5 6 7 8
+⣳	braille 1 2 5 6 7 8
+⣴	braille 3 5 6 7 8
+⣵	braille 1 3 5 6 7 8
+⣶	braille 2 3 5 6 7 8
+⣷	braille 1 2 3 5 6 7 8
+⣸	braille 1 2 3 7 8
+⣹	braille 1 4 5 6 7 8
+⣺	braille 2 4 5 6 7 8
+⣻	braille 1 2 4 5 6 7 8
+⣼	braille 3 4 5 6 7 8
+⣽	braille 1 3 4 5 6 7 8
+⣾	braille 2 3 4 5 6 7 8
+⣿	braille 1 2 3 4 5 6 7 8

user_docs/en/changes.t2t

@@ -6,6 +6,8 @@ What's New in NVDA
 = 2023.2 =
 
 == New Features ==
+- Added pronunciation of Unicode braille symbols such as "⠐⠣⠃⠗⠇⠐⠜". (#14548)
+- 
 
 
 == Changes ==