Support Qgis 4

[JoerivanEngelen]

Fixes #191

Converted with the script https://github.com/qgis/QGIS/wiki/Plugin-migration-to-be-compatible-with-Qt5-and-Qt6

Had to manually fix two things:

• a 0 had to be changed to the explicit enumerator.
• a bool had to be changed to an explicit enumerator for the surpress message box radio button

I also explicitly set the permissions for GitHub pages, so that that doesn't break anymore

[Copilot]

Pull request overview

This PR updates the QGIS-Tim plugin to be compatible with QGIS 4 by switching PyQt imports to qgis.PyQt and updating numerous QGIS/Qt enum references to their scoped (Qt6-style) forms. It also bumps the development version to 0.7.0.dev2 and updates documentation/tutorial requirements to no longer exclude QGIS 4.

Changes:

• Migrated PyQt imports across the plugin from PyQt5 to qgis.PyQt and updated scoped enums for QGIS 4 / Qt6 compatibility.
• Updated QGIS API enum usages (message levels, task flags, layer proxy filters, raster/mesh settings, etc.).
• Bumped package/plugin versions to 0.7.0.dev2 and adjusted docs/tutorial requirements around supported QGIS versions.

Reviewed changes

Copilot reviewed 40 out of 40 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pyproject.toml	Version bump to 0.7.0.dev2.
pixi.toml	Version bump and QGIS dependency range adjusted for dev env.
gistim/init.py	Version bump to 0.7.0.dev2.
plugin/qgistim/metadata.txt	Declares QGIS max version and bumps plugin version/changelog.
plugin/qgistim/qgistim.py	Updates dock widget area enum usage for Qt6-style enums.
plugin/qgistim/resources.py	Switches resource module import to qgis.PyQt.
plugin/qgistim/core/task.py	Updates task cancel flag and message level enums.
plugin/qgistim/core/processing.py	Updates QtCore imports and QGIS enum scoping (mesh resampling, temporal mode).
plugin/qgistim/core/layer_styling.py	Updates QtGui import and QGIS enum scoping for styling/statistics/label placement.
plugin/qgistim/core/geopackage.py	Updates QgsVectorFileWriter enums for QGIS 4 API.
plugin/qgistim/core/elements/aquifer.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/building_pit.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/circular_area_sink.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/constant.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/discharge_observation.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/domain.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/element.py	Switches widget imports to qgis.PyQt and replaces exec_() with exec().
plugin/qgistim/core/elements/head_line_sink.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/headwell.py	Switches Qt imports (QVariant, QColor) to qgis.PyQt.
plugin/qgistim/core/elements/impermeable_line_doublet.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/leaky_building_pit.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/leaky_line_doublet.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/line_sink_ditch.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/observation.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/particle.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/polygon_area_sink.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/polygon_inhomogeneity.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/polygon_semi_confined_top.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/uniform_flow.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/core/elements/well.py	Switches QVariant import to qgis.PyQt.
plugin/qgistim/widgets/compute_widget.py	Updates Qt imports and QGIS enum scoping (filters, alignment, task dependency, mesh resampling).
plugin/qgistim/widgets/dataset_widget.py	Updates Qt imports and enum scoping (selection mode, sizing, header resize mode, message levels, unit enums, message box buttons).
plugin/qgistim/widgets/elements_widget.py	Switches widgets import to qgis.PyQt and updates message level enum.
plugin/qgistim/widgets/error_window.py	Switches widgets import to qgis.PyQt (formatting cleanup).
plugin/qgistim/widgets/install_dialog.py	Switches Qt imports to qgis.PyQt and updates task flags / message levels / button enums / alignment enum.
plugin/qgistim/widgets/tim_widget.py	Switches Qt imports to qgis.PyQt and updates suppress/alignment enums.
docs/install.qmd	Updates supported QGIS version wording to allow QGIS 4+.
docs/tutorial_TheHague.qmd	Updates requirements to allow QGIS 4+.
docs/tutorial_Rijsenhout.qmd	Updates requirements to allow QGIS 4+.
docs/tutorial_particle_tracking.qmd	Updates requirements to allow QGIS 4+.

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