Create first version of TIT that does exactly the same as TWW INTERLIS Import / Export

[sjib]

• [ ] Review initial code base from TWW INTERLIS Import / Export
• [ ] Sort out unnecessary files
• [ ] Check which of the tools can be kicked out \TIT\plugin\teksi_interlis_tool\tools
• [ ] Check which parts of ui can be kicked out \TIT\plugin\teksi_interlis_tool\ui
• [ ] adapt all occurances of TWW* and rename them to TIT if function is re-used
• [ ] adapt all occurances of teksi_wastewater and rename to teksi_interlis_tool if functionality is re-used
• [ ] adapt all code to make this an independant plugin to work
• [ ] check basic functionality
• [ ] check label export
• [ ] check orientation
• [ ] check log path
• [ ] check selection on export
• [ ] check import
• [ ] check about
• [ ] check metadata.txt
• [ ] check ...
• [ ] ...

[sjib]

• [ ] Check end of life Qt5
• [ ] Propose necessary adaptions QT6/ is there also Qt7 - dependencies with QGIS current and future releases / roadmap
• [ ] Implement necessary adaptions
• [ ] Identifiy other library dependencies and end of life relations