fix: add name field to genie manifest for non-interactive --set support

[pkosiec]

Summary

• Adds name field to the genie plugin manifest (fields object) alongside the existing id field
• Updates both the per-plugin manifest and the template appkit.plugins.json

Problem

databricks apps init --set 'genie.genie-space.name=<value>' fails with:

Error: plugin "genie" has no resource with key "genie-space" and field "name"

The CLI's --set validation checks fields against the AppKit manifest, which only declared id for genie spaces. However, the CLI generator needs both id and name to produce valid DABs genie_space YAML.

Every other multi-field plugin (lakebase/postgres, secret, database) already declares all its fields in the manifest. Genie was the only one missing a field.

Testing

Before (reproduce the bug on main)

# Non-interactive: fails with "has no resource with key "genie-space" and field "name""
dbx apps init --name test-app --features genie \
  --set 'genie.genie-space.id=SPACE123' \
  --set 'genie.genie-space.name=My Space' \
  --run none --deploy=false

After (verify with this branch)

# Non-interactive with both fields: should succeed
dbx apps init --name test-app --features genie \
  --template /path/to/this/branch/template \
  --set 'genie.genie-space.id=SPACE123' \
  --set 'genie.genie-space.name=My Space' \
  --run none --deploy=false

# Non-interactive with only id: should error with "incomplete resource"
dbx apps init --name test-app --features genie \
  --template /path/to/this/branch/template \
  --set 'genie.genie-space.id=SPACE123' \
  --run none --deploy=false

# Interactive: should show Genie Space picker and complete normally
dbx apps init --features genie \
  --template /path/to/this/branch/template

This pull request and its description were written by Isaac.