feat(cli): associate newly created capability with the main window

[lucasfernog]

without this change the capability is not applied to any context and it might be hard for users to figure out why

[github-actions]

Package Changes Through 775fbc0

There are 6 changes which include tauri with patch, tauri-bundler with patch, tauri-cli with patch, @tauri-apps/cli with patch, tauri-runtime-wry with patch, @tauri-apps/api with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
@tauri-apps/api	2.0.3	2.0.4
tauri-bundler	2.0.4	2.0.5
tauri-runtime-wry	2.1.2	2.1.3
tauri	2.0.6	2.0.7
@tauri-apps/cli	2.0.4	2.0.5
tauri-cli	2.0.4	2.0.5

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