The buffer, layout, style, symbols, text, and the top level of widgets
modules are moved to ratatui-core. This is the first step in
modularizing the library so that the core types can be used in other
projects without the need for the backend / widgets types.
This helps reduce the need for updating other crates as often due to
semver changes outside of the core types.
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Co-authored-by: Orhun Parmaksız <orhun@archlinux.org>
Co-authored-by: Orhun Parmaksız <orhunparmaksiz@gmail.com>
