pgAdmin 4 commit: Added support to compare schemas and databases in sch

Added support to compare schemas and databases in schema diff. Fixes #5891

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=b76bb5837844d65bbc26e766600c992230e56273

Modified Files
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docs/en_US/images/schema_diff_DDL_comparison.png | Bin 445311 -> 441370 bytes
docs/en_US/images/schema_diff_compare_button.png | Bin 63793 -> 95363 bytes
.../images/schema_diff_comparison_results.png | Bin 204651 -> 226990 bytes
docs/en_US/images/schema_diff_dialog.png | Bin 372964 -> 126941 bytes
docs/en_US/images/schema_diff_filter_option.png | Bin 156963 -> 169845 bytes
.../schema_diff_generate_script_query_editor.png | Bin 233673 -> 252819 bytes
docs/en_US/release_notes_4_28.rst | 1 +
docs/en_US/schema_diff.rst | 19 ++-
.../databases/schemas/collations/__init__.py | 9 ++
.../servers/databases/schemas/domains/__init__.py | 9 ++
.../databases/schemas/foreign_tables/__init__.py | 7 +
.../schemas/fts_configurations/__init__.py | 21 +++
.../databases/schemas/fts_dictionaries/__init__.py | 7 +
.../databases/schemas/fts_parsers/__init__.py | 21 +++
.../databases/schemas/fts_templates/__init__.py | 21 +++
.../databases/schemas/functions/__init__.py | 15 ++-
.../servers/databases/schemas/packages/__init__.py | 19 ++-
.../databases/schemas/sequences/__init__.py | 9 ++
.../servers/databases/schemas/synonyms/__init__.py | 12 ++
.../servers/databases/schemas/tables/__init__.py | 6 +-
.../schemas/tables/compound_triggers/__init__.py | 15 ++-
.../databases/schemas/tables/indexes/__init__.py | 12 +-
.../tables/row_security_policies/__init__.py | 15 ++-
.../databases/schemas/tables/rules/__init__.py | 17 +++
.../databases/schemas/tables/schema_diff_utils.py | 22 +++-
.../databases/schemas/tables/triggers/__init__.py | 8 +-
.../servers/databases/schemas/types/__init__.py | 9 ++
.../servers/databases/schemas/views/__init__.py | 11 ++
web/pgadmin/tools/schema_diff/__init__.py | 145 ++++++++++++++++++---
web/pgadmin/tools/schema_diff/compare.py | 10 +-
web/pgadmin/tools/schema_diff/directory_compare.py | 19 ++-
.../schema_diff/static/js/schema_diff.backform.js | 2 +-
.../tools/schema_diff/static/js/schema_diff_ui.js | 63 ++++++++-
.../schema_diff/tests/test_schema_diff_comp.py | 2 +-
34 files changed, 466 insertions(+), 60 deletions(-)