refactor(bundler): remove unused fs utils, add http utils

[FabianLars]

not done yet, just checking if it still compiles in ci

[github-actions[bot]]

Package Changes Through 9e484f8a579356c218d9377e2e42b18488f6f31c

There are 7 changes which include tauri-bundler with minor, tauri-cli with minor, @tauri-apps/cli with minor, tauri with minor, tauri-runtime with minor, tauri-runtime-wry with minor, tauri-utils 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-utils | 2.1.0 | 2.1.1 | tauri-bundler | 2.1.0 | 2.2.0 | tauri-runtime | 2.2.0 | 2.3.0 | tauri-runtime-wry | 2.2.0 | 2.3.0 | tauri-codegen | 2.0.3 | 2.0.4 | tauri-macros | 2.0.3 | 2.0.4 | tauri-plugin | 2.0.3 | 2.0.4 | tauri-build | 2.0.3 | 2.0.4 | tauri | 2.1.1 | 2.2.0 | @tauri-apps/cli | 2.1.0 | 2.2.0 | tauri-cli | 2.1.0 | 2.2.0 |

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[FabianLars]

the reason for this pr was that i needed to re-use the windows download functions (including the github mirror handling) in a small linux refactor (getting rid of build-appimage.sh) and while looking into it i noticed that we had 2 fs helper modules with duplicate functionality.