Fix tauri permission for reading files

- required for sharing logs and repo with feedback

crates/gitbutler-tauri/capabilities/main.json

@@ -9,6 +9,8 @@
 		"core:window:allow-start-dragging",
 		"core:window:default",
 		"dialog:allow-open",
+		"fs:allow-read-file",
+		"fs:allow-cache-read-recursive",
 		"log:default",
 		"process:default",
 		"shell:allow-open",

crates/gitbutler-tauri/capabilities/migrated.json

@@ -1,7 +0,0 @@
-{
-	"identifier": "migrated",
-	"description": "permissions that were migrated from v1",
-	"local": true,
-	"windows": ["main"],
-	"permissions": ["core:default"]
-}