Manage ggsql kernel spec in Positron extension (#277)

* Manage ggsql kernel spec in Positron extension

* Add apple entitlements

* Apply suggestions from code review

* Tidy up path resolving

* Switch to using kallichore to manage kernel

Author: georgestagg

.github/workflows/release-packages.yml

@@ -124,6 +124,7 @@ jobs:
 
           [package.metadata.packager.macos]
           signing-identity = "${APPLE_SIGN_IDENTITY}"
+          entitlements = "entitlements.plist"
           EOF
 
       - name: Install cargo-packager

ggsql-jupyter/src/main.rs

@@ -122,7 +122,9 @@ fn install_kernel(user: bool, sys_prefix: bool) -> Result<()> {
         "display_name": "ggsql",
         "language": "ggsql",
         "interrupt_mode": "signal",
-        "env": {},
+        "env": {
+            "RUST_LOG": "error"
+        },
         "metadata": {
             "debugger": false
         }