refactor: Rename CourseEditLTIFieldsEnabledFlag to CourseAllowPIISharingInLTIFlag and use it for LTI1.3
This commit renames the CourseEditLTIFieldsEnabledFlag to CourseAllowPIISharingInLTIFlag since the aim is to expand its scope to all LTI-related PII sharing. It also removes the current LTI1.3 waffle flag for PII sharing.

This moves the CourseEditLTIFieldsEnabledFlag from edx-platform to this repo. This allows using the flag from both lms and studio.

This removes feature flags that were in place for development, but aren't needed in production.

* feat: set LTI 1.3 support enabled by default

* feat: Improve settings wording

* chore: Update translation files

* chore: Version bump

* quality: Fix pylint errors and improve waffleflag documentation

* doc: Add changes to changelog

* feat: Remove LTI 1.3 flags and enable services by default

* doc: Update NRPS ADR

* doc: Fix typo

* Update README.rst

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

* Update README.rst

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

* Update setup.py

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

This depends on a new API in edx-platform: get_course_members

Fall-back to the old path.

Once the LMS has fully switched over to this new path [1],
we can remove the legacy (LMS) import support here.

- [1] https://github.com/edx/edx-platform/pull/27289

This implements the endpoint that LTI tools use to return the deep linking configuration to the LMS, along with the `ltiResourceLink` type to allow testing with demo tool.

Signed-off-by: Giovanni Cimolin da Silva <giovannicimolin@gmail.com>

[BD-24] [TNL-7661] [BB-3172] LTI Improvements - Use declarative grading model on XBlock launch (#116)

* create default LineItem, WIP grade save

* add score to django admin

* WIP: find user and save grade to xblock

* boolean pragramatic grade interaction flag and optional params in enable_ags method

* Submit grades using grade signals

* lineitem urls should be optional

* lineitem is now readonly in declarative method

* test grade_submit called properly

* quality issue

* raise LTIError

* moved listener to signal.py, refactored models.py, added due and start date, updated tests.

* use load_block_as_anonymous_user and remove load_block, refactor tests

* refactor test to fix quality issue

* make lineitems_url required

* refactor tests, accept_grades_past_due on check

* test accept_grades_past_due

* add comma to last items

* refactor get_lti_ags_lineitems_url

* make sure crum returns user and not None

* nitpicks & use maximum score when given score is larger than maximum

* fix docstring of load_block_as_anonymous_user

* Add django url testing support

* Add tests to django views, implement compat layer

* Addressing review comments

* Improve tests and test descriptions

* Nit