Smooth init with app config

[mayanktestweb]

Smooth Initialization Of UI-CLI with app_config.toml

Problem

So previously initialization process had following problems

1. Breaking of init process due to lack of tailwind-input-file property in Cargo.toml, but thing is we can not expect a new user to set it up before hand.
2. Lack of proper dependency in application. Previously init process was forcing to install leptos@0.6.13 but new components are not compatible with leptos@06.13. Also new components have a dependency on tw_merge lib which was not being installed.
3. Lastly, application configurations were dispersed in two files, i.e., Cargo.toml and Components.toml.

Solution

So while Cargo.toml is great place for everything Rust specific, our application should have it's own configuration file which will serve as a single source of truth through out the application. We have it as app_config.toml, which initially holds two important values tailwind-input-file and base-path-component.

We also have automated installation of leptos@latest with --features csr and tw_merge with --features variant. Note that we have not made our initial dependencies to have any version specific now. But since we my want to support Yew and Dioxus in future we will be specific about versions, their peer dependencies and also their boilerplate code.

Note: Branch has multiple commits with message explaining changes in each commit.

[max-wells]

@mayanktestweb Thank you a lot for your contribution! 🙏