Begin a C++ cli and remove the Python scripts

cli/cli.pro

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+QT -= gui
+QT += sql concurrent
+CONFIG += c++11 console
+CONFIG -= app_bundle
+
+# The following define makes your compiler emit warnings if you use
+# any feature of Qt which as been marked deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+# You can also make your code fail to compile if you use deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+LIBS += -luchardet -lpoppler-qt5 -lquazip
+SOURCES += \
+        main.cpp \
+    encodingdetector.cpp \
+    processor.cpp \
+    pdfprocessor.cpp \
+    defaulttextprocessor.cpp \
+    command.cpp \
+    commandadd.cpp \
+    tagstripperprocessor.cpp \
+    nothingprocessor.cpp \
+    odtprocessor.cpp \
+    utils.cpp \
+    odsprocessor.cpp \
+    qssgeneralexception.cpp
+
+HEADERS += \
+    encodingdetector.h \
+    processor.h \
+    pagedata.h \
+    pdfprocessor.h \
+    defaulttextprocessor.h \
+    command.h \
+    commandadd.h \
+    tagstripperprocessor.h \
+    nothingprocessor.h \
+    odtprocessor.h \
+    utils.h \
+    odsprocessor.h \
+    qssgeneralexception.h
+INCLUDEPATH += /usr/include/poppler/qt5/ /usr/include/quazip5