Add initial project structure with essential files including .gitignore, application resources, and various model and view components for the application. Implemented asynchronous parsing support and database structure checks.

.gitignore

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+# Build directories
+build/
+build-*/
+*-build/
+*.pro.user
+*.pro.user.*
+*.qmake.stash
+*.qmake.cache
+
+# Compiled Object files
+*.o
+*.obj
+*.lo
+*.slo
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Compiled Static libraries
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+*.bin
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Qt specific
+*.qmlc
+*.jsc
+moc_*.cpp
+moc_*.h
+qrc_*.cpp
+ui_*.h
+*.moc
+*.qm
+*.prl
+*.pri
+*.pro.user
+*.pro.user.*
+*.qmake.stash
+*.qmake.cache
+CMakeLists.txt.user
+
+# Qt Creator
+*.creator
+*.creator.user
+*.creator.user.*
+*.autosave
+
+# Visual Studio / Visual Studio Code
+.vs/
+.vscode/
+*.vcxproj
+*.vcxproj.filters
+*.vcxproj.user
+*.sln
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+*.VC.db
+*.VC.VC.opendb
+
+# CMake
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps/
+
+# Archives
+*.zip
+*.tar
+*.tar.gz
+*.rar
+*.7z
+
+# OS specific
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+desktop.ini
+
+# IDE specific
+.idea/
+*.swp
+*.swo
+*~
+*.bak
+*.tmp
+
+# Database files (if they contain sensitive data)
+*.db
+*.sqlite
+*.sqlite3
+
+# Log files
+*.log
+
+# Temporary files
+*.tmp
+*.temp
+*.cache
+
+# Python (if any scripts)
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+ENV/
+
+# Project specific
+*.pdfprj.bak
+*.backup
+