feat: use ConfigGroupsEditor in GroupPresetTableWidget.

[tlambert03]

this is what @fdrgsp did in the christina branch

adds the new ConfigGroupsEditor as a button to the GroupPresetTableWidget...
and adds an apply button that applies it to core ,and warns if you close without saving

closes #539
closes #540

[codecov]

Codecov Report

❌ Patch coverage is 97.18310% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.47%. Comparing base (bc5ce84) to head (6c36323).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
..._group_preset_widget/_group_preset_table_widget.py	92.72%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #545      +/-   ##
==========================================
+ Coverage   86.89%   87.47%   +0.58%     
==========================================
  Files         115      115              
  Lines       14112    14071      -41     
==========================================
+ Hits        12262    12308      +46     
+ Misses       1850     1763      -87     

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[tlambert03]

@fdrgsp, can you pull this one and try it out and merge when ready?

[fdrgsp]

@tlambert03 love it!!!

Just a small thing, what if we update the example to print the changes when apply is clicked?

import sys

from pymmcore_plus import CMMCorePlus
from qtpy.QtWidgets import QApplication

from pymmcore_widgets import ConfigGroupsEditor

app = QApplication([])
core = CMMCorePlus()
core.loadSystemConfiguration("tests/test_config.cfg")


with_cfg = sys.argv[1].lower() in ("1", "true") if len(sys.argv) > 1 else False
cfg = ConfigGroupsEditor.create_from_core(core, load_configs=with_cfg)

# connect to apply signal to print the changes
def _on_apply_clicked(changed, deleted, channel_group):
    print("\n\nApply clicked:")
    print(f"Changed: {[cg.name for cg in changed]}")
    print(f"Deleted: {deleted}")
    print(f"Channel group: {channel_group}")
cfg.applyRequested.connect(_on_apply_clicked)

cfg.resize(900, 550)
cfg.show()

app.exec()

This way if we run uv run examples/config_groups_editor.py true we see a summary of the chnages:

Apply clicked:
Changed: ['Camera']
Deleted: ['LightPath']
Channel group: None

[tlambert03]

that would be great! wanna make that change to my branch and merge when ready?