Replace vendored wasm-split with out-of-repository version

[WorldSEnder]

PR is for testing for now. The git dependency must be replaced by a proper release of the wasm-split crate before merging.

To be used in tandem with the PR on cargo-leptos in leptos-rs/cargo-leptos#578

[johansmitsnl]

My feedback on the test.

During the wasm compilation I see warnings on the trait:

warning: function `__ConsolePageSectionPreviewRoute_View` should have a snake case name
   --> src/app.rs:586:20
    |
586 | impl LazyRoute for ConsolePageSectionPreviewRoute {
    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `__console_page_section_preview_route_view`

The error I get in my project is:

Uncaught RuntimeError: indirect call to null
[app.wasm:8200590:1](http://127.0.0.1:8000/pkg/app.wasm)
    _ZN12wasm_bindgen4__rt8wbg_cast17h7e34a28c9f8f75fcE http://127.0.0.1:8000/pkg/app.wasm:8200590
    _ZN12wasm_bindgen7closure16Closure$LT$T$GT$4wrap17hb4d7d15805f372faE http://127.0.0.1:8000/pkg/app.wasm:6450621
    _ZN10leptos_use18use_event_listener31use_event_listener_with_options17h33e8f651187e3ed9E http://127.0.0.1:8000/pkg/app.wasm:877533
    _ZN10leptos_use18use_event_listener31use_event_listener_with_options17h33e8f651187e3ed9E http://127.0.0.1:8000/pkg/DDXqf-gPnDII5b5U8xfm7Q.wasm:4710614

Edit, in Chrome I get a better error:

Uncaught RuntimeError: null function or function signature mismatch
    at _ZN12wasm_bindgen4__rt8wbg_cast17h7e34a28c9f8f75fcE (app.wasm:0x7d218e)
    at _ZN12wasm_bindgen7closure16Closure$LT$T$GT$4wrap17hb4d7d15805f372faE (app.wasm:0x626dbd)
    at _ZN10leptos_use18use_event_listener31use_event_listener_with_options17h33e8f651187e3ed9E (app.wasm:0xd63dd)
    at _ZN10leptos_use18use_event_listener31use_event_listener_with_options17h33e8f651187e3ed9E (DDXqf-gPnDII5b5U8xfm7Q.wasm:0x47e0d6)

I'll share a zip of the output in Discord.

[WorldSEnder]

@johansmitsnl if you have time, I'd value your test on the newest updated version of both this branch paired with the cargo-leptos PR (sorry if you got the earlier ping).
@gbj can we somehow disable or turn down CI while this is in draft mode? While not my wasted money and energy, I feel somewhat responsible :p

[johansmitsnl]

@WorldSEnder I did a quick test and it is working with a debug build

[gbj]

This all looks good to me, with the crate-name caveat noted above.

[gbj]

note: you're not going to be able to publish this as wasm_split due to a 6 year old name-squat. But I'm happy to give shared ownership of wasm_split_helpers if we're going to use the same crate anyway.