fix(developer): remove redundant Name and RTL fields from .kps LexicalModel

[mcdurdin]

Follows on from the similar changes to Keyboard fields in #13600. This deprecates the RTL and Name fields. RTL was never used. Name was written but never presented to end users, so effectively irrelevant. Name also was present in File.Description (already deprecated) for the corresponding model.js and Info.Name, so doubly redundant.

Also updates the schema documentation to mark the deprecated fields.

Relates-to: #13600

TODO

• Copy schema updates to api.keyman.com - chore: add v18.0 kps schema api.keyman.com#275

User Testing

TEST_COMPILE: Load a lexical model project from the lexical models repository. Open the .kps file, make an inconsequential change, save it, and try and build the entire project. Verify that the project builds. Open the .kps file in a text editor, and verify that the field Package/LexicalModels/LexicalModel/Name has been removed.

TEST_NEW_PROJECT: Create a new lexical model project and verify that it builds correctly

[keymanapp-test-bot]

User Test Results

Test specification and instructions

• ✅ TEST_COMPILE (PASSED): notes (notes)
• ✅ TEST_NEW_PROJECT (PASSED): notes (notes)

Test Artifacts

• Developer
  • Keyman Developer
  • Compiler Regression Tests
  • kmcomp.zip
• Keyboards
  • Test Keyboards
• Windows
  • Keyman for Windows
  • FirstVoices Keyboards for Windows
  • Text Editor (32 bit)
  • Text Editor (64 bit)

[darcywong00]

lgtm

[dinakaranr]

Test Results

I tested the PR13640 task in the Keymandeveloper-18.0.222-beta-test-13640 build in Windows 10. Here, I am sharing my observation.

• TEST_COMPILE (Passed): notes

1. Installed the Keymandeveloper-18.0.222.exe build.
2. Open the "sil.jra-khmer.jarai" LDML keyboard project from the GitHub\lexical-models\release folder path.
3. Click on the "Packaging" tab and then click the "*.kps" link button.
4. Click on the "Source" tab.
5. Enter some text in the "Description" tag and then save the changes.
6. Build the entire project on the packaging.
7. Verified that the project build folder had files(inside the build folder)
8. Compile the changes by clicking the keyboard menu --> Compile keyboard.
9. Open the .kps file in a notepad from the source folder.
10. Verified that the name tags are removed in the *.kps file
11. The "Package/Keyboards/Keyboard/Name" field disappeared after editing and compiling the *.kps file.
    It works well.

• TEST_NEW_PROJECT (Passed): notes

1. Installed the Keymandeveloper-18.0.222.exe build.
2. Open an LDML keyboard project from the GitHub\lexical-models\release folder path.
3. Create a new LDML keyboard project by clicking the project menu --> new project.
4. Build the entire project on the packaging.
5. Verified that the project build folder has files(inside the build folder)
6. Compile the changes by clicking the keyboard menu --> Compile keyboard.
7. Open the .kps file in a notepad from the source folder.
8. Verified that the name does not appear in the *.kps file
   It works well.

[keyman-server]

Changes in this pull request will be available for download in Keyman version 18.0.227-beta