Add demo and tutorial

[GDYendell]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.84%. Comparing base (5495fde) to head (4d62414).
Report is 12 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
+ Coverage   90.81%   91.84%   +1.02%     
==========================================
  Files          41       40       -1     
  Lines        1971     1961      -10     
==========================================
+ Hits         1790     1801      +11     
+ Misses        181      160      -21     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Copilot]

Pull Request Overview

This pull request adds demo and tutorial components for showcasing FastCS functionality while also updating backend linking for improved sub-controller resolution and adjusting project configurations accordingly.

• Removed CLI tests and legacy CLI module.
• Introduced demo simulation, device, and controller files.
• Updated backend linking to correctly resolve sub-controller paths and adjusted project configurations (dependencies, docs, workflows).

Reviewed Changes

Copilot reviewed 22 out of 24 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/test_cli.py	Removal of CLI test code
tests/test_backend.py	Addition of new backend linking tests
src/fastcs/transport/epics/gui.py	Minor update with type ignore comment
src/fastcs/launch.py	Updated import for version
src/fastcs/demo/simulation/temp_controller.yaml	New simulation configuration file
src/fastcs/demo/simulation/device.py	New device simulation code with ramp and update methods
src/fastcs/demo/controllers.py	New demo controllers and handler implementations
src/fastcs/demo/controller.yaml	New demo controller configuration
src/fastcs/demo/main.py	New demo module entry point
src/fastcs/datatypes.py	Updated error message formatting
src/fastcs/controller.py	Added sub-controller access via getitem
src/fastcs/backend.py	Updates to attribute linking and scan task scheduling
src/fastcs/main.py	Removed legacy CLI module
pyproject.toml	Updated dependencies and test coverage omit paths
docs/conf.py	Updated nitpick ignore regex and logo
.github/workflows/_dist.yml	Updated workflow step for testing version

Files not reviewed (2)

• .vscode/launch.json: Language not supported
• src/fastcs/demo/schema.json: Language not supported

Comments suppressed due to low confidence (1)

src/fastcs/demo/simulation/device.py:107

• [nitpick] Although functionally equivalent, consider replacing 'sum(self.get_voltages() * 50)' with '50 * sum(self.get_voltages())' to make the intent clearer.

return sum(self.get_voltages() * 50)

[GDYendell]

It shouldn't be including the demo directory in coverage. The omit config doesn't seem work in CI, but it does locally...

[ajgdls]

Installed and tested the applications.