add specification for Qt translation files

database/qt_translation.ksy

@@ -0,0 +1,92 @@
+meta:
+  id: qt_translation
+  title: Qt Translation
+  file-extension: qm
+  license: LGPL-3.0-only
+  encoding: UTF-8
+  endian: be
+doc-ref: https://code.qt.io/cgit/qt/qtbase.git/tree/src/corelib/kernel/qtranslator.cpp?h=dev
+seq:
+  - id: header
+    type: header
+  - id: tags
+    type: tag
+    repeat: eos
+types:
+  header:
+    seq:
+      - id: signature
+        contents: [0x3c, 0xb8, 0x64, 0x18, 0xca, 0xef, 0x9c, 0x95, 0xcd, 0x21, 0x1c, 0xbf, 0x60, 0xa1, 0xbd, 0xdd]
+  tag:
+    seq:
+      - id: tag
+        type: u1
+        enum: translator_tags
+        valid:
+          any-of:
+            - translator_tags::contexts
+            - translator_tags::hashes
+            - translator_tags::messages
+            - translator_tags::numerus_rules
+            - translator_tags::dependencies
+            - translator_tags::language
+      - id: len_data
+        type: u4
+      - id: data
+        size: len_data
+        type:
+          switch-on: tag
+          cases:
+            translator_tags::language: str
+            translator_tags::messages: messages
+  messages:
+    seq:
+      - id: messages
+        type: message
+        repeat: eos
+  message:
+    -webide-representation: '{tag}'
+    seq:
+      - id: tag
+        type: u1
+        enum: tag_types
+      - id: payload
+        type:
+          switch-on: tag
+          cases:
+            tag_types::translation: translation
+            tag_types::source_text: tag_text
+            tag_types::context: tag_text
+            tag_types::comment: tag_text
+    types:
+      tag_text:
+        seq:
+          - id: len_data
+            type: u4
+          - id: data
+            size: len_data
+            type: str
+      translation:
+        seq:
+          - id: len_data
+            type: u4
+          - id: data
+            size: len_data
+enums:
+  translator_tags:
+    0x2f: contexts
+    0x42: hashes
+    0x69: messages
+    0x88: numerus_rules
+    0x96: dependencies
+    0xa7: language
+  tag_types:
+    1: end
+    2: source_text_16
+    3: translation
+    4: context_16
+    5: obsolete_1
+    6: source_text
+    7: context
+    8: comment
+    9: obsolete_2