refactor: added builder pattern and TuiShaderBackend trait#10

pemattern merged 1 commit intomainpemattern/tui-shader:mainfrom

9-refactor-shadercanvasoptions-to-be-shadercanvas-and-implement-builder-patternpemattern/tui-shader:9-refactor-shadercanvasoptions-to-be-shadercanvas-and-implement-builder-patternCopy head branch name to clipboard