feat: add Fluid Typography Generator extension for VSCode

- Implemented core functionality to generate fluid typography CSS variables based on user-defined breakpoints and font sizes.
- Created configuration options for output format (Tailwind or vanilla CSS) and rounding settings.
- Added input parsing for settings from text files or VSCode interface.
- Developed CSS generation logic with support for `clamp()` and optional rounding.
- Included tests for parsing settings, generating CSS, and inserting text at selection in the editor.
- Documented project details and usage in project.md.
- Added example CSS output in typography.css.

.vscodeignore

@@ -0,0 +1,5 @@
+.vscode/**
+test/**
+node_modules/**
+*.vsix
+*.tgz