feat: add option to sort alter relationship tables by name

[Douglas-K]

Change Description:

Enables the sorting of alter relationships tables by name, to make it easier to make manual corrections to the data at the Alter Relationships stage.

Additional "name sort" drop-down options are added for Related, Matched, Removed, and Added tables.

Notes:

• enabling the built-in table sorting function with tbl.setSortingEnabled(True), doesn't seem to work as it appears to lose persistent connection between the visual table in QGIS (after sorting) and the database table in Postgres.
• using a click listener with tbl.horizontalHeader().sectionClicked.connect(self.idBulk) and sorting with something like result.sort(key=lambda i: i[4], reverse = True), also doesn't seem to work.

Notes for Testing:

Bulk load some data, run Compare Outlines, then Alter Relationships. Click on the drop-down menu and choose one of the "name sort" options.

Source Code Documentation Tasks:

• README updated (where applicable)
• CHANGELOG (Unreleased section) updated
• Docstrings / comments included to help explain code

User Documentation Tasks:

• Confluence user guide updated (where applicable)

Testing Tasks:

• Added tests that fail without this change
• All tests are passing in development environment
• Reviewers assigned
• Linked to main issue for ZenHub board

[jducnuigeen]

Looks great ! Thanks !