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.

typography.css

@@ -0,0 +1,65 @@
+/* Basic typographical styles */
+
+/**
+ * All font sizes are based on 16px base font size and 1920px wide screen
+ * Default size is expressed as percentage of screen width.
+ * text-14px: 12px-27px, default: 14px
+ * text-16px: 14px-28px, default: 16px
+ * text-18px: 14px-30px, default: 18px
+ * text-20px: 16px-32px, default: 20px
+ * text-22px: 17px-33px, default: 22px
+ * text-25px: 18px-35px, default: 25px
+ * text-30px: 19px-37px, default: 30px
+ * text-35px: 20px-40px, default: 35px
+ * text-38px: 22px-48px, default: 38px
+ * text-40px: 24px-56px, default: 40px
+ * text-45px: 25px-64px, default: 45px
+ * text-50px: 27px-72px, default: 50px
+ * text-55px: 28px-76px, default: 55px
+ * text-60px: 30px-80px, default: 60px
+ * text-70px: 30px-76px, default: 70px
+ * text-75px: 32px-80px, default: 75px
+ *
+ * Font sizes at standard viewport widths:
+ *           | 360px | 640px | 768px | 1024px | 1280px | 1440px | 1920px
+ *           |-------|-------|-------|--------|--------|--------|-------
+ * text-14px | 12.00 | 12.36 | 12.52 | 12.85  | 13.18  | 13.38  | 14.00
+ * text-16px | 14.00 | 14.36 | 14.52 | 14.85  | 15.18  | 15.38  | 16.00
+ * text-18px | 14.00 | 14.72 | 15.05 | 15.70  | 16.36  | 16.77  | 18.00
+ * text-20px | 16.00 | 16.72 | 17.05 | 17.70  | 18.36  | 18.77  | 20.00
+ * text-22px | 17.60 | 18.36 | 18.75 | 19.47  | 20.19  | 20.65  | 22.00
+ * text-25px | 18.00 | 19.26 | 19.83 | 20.98  | 22.13  | 22.85  | 25.00
+ * text-30px | 18.96 | 20.89 | 21.85 | 23.66  | 25.47  | 26.60  | 30.00
+ * text-35px | 20.00 | 22.69 | 23.92 | 26.38  | 28.85  | 30.38  | 35.00
+ * text-38px | 22.40 | 24.85 | 26.48 | 29.04  | 31.60  | 33.20  | 38.00
+ * text-40px | 24.00 | 26.87 | 28.18 | 30.81  | 33.44  | 35.08  | 40.00
+ * text-45px | 25.60 | 29.22 | 30.67 | 33.86  | 37.04  | 39.03  | 45.00
+ * text-50px | 27.20 | 31.58 | 33.16 | 36.90  | 40.65  | 42.98  | 50.00
+ * text-70px | 30.40 | 37.01 | 40.76 | 47.26  | 53.75  | 57.82  | 70.00
+ * text-75px | 32.00 | 39.46 | 43.25 | 50.30  | 57.36  | 61.77  | 75.00
+*/
+
+@theme static {
+    --text-base: 1rem;
+    --text-14px: round(down, clamp(0.75rem, 0.7212rem + 0.1282vw, 0.875rem), 2px);
+    --text-16px: round(down, clamp(0.875rem, 0.8462rem + 0.1282vw, 1rem), 2px);
+    --text-18px: round(down, clamp(0.875rem, 0.8173rem + 0.2564vw, 1.125rem), 2px);
+    --text-20px: round(down, clamp(1rem, 0.9423rem + 0.2564vw, 1.25rem), 2px);
+    --text-22px: round(down, clamp(1.1rem, 1.0365rem + 0.2821vw, 1.375rem), 2px);
+    --text-25px: round(down, clamp(1.125rem, 1.024rem  + 0.4487vw, 1.5625rem), 2px);
+    --text-30px: round(down, clamp(1.185rem, 1.0258rem + 0.7077vw, 1.875rem), 2px);
+    --text-35px: round(down, clamp(1.25rem, 1.0337rem + 0.9615vw, 2.1875rem), 2px);
+    --text-38px: round(down, clamp(1.4rem, 1.175rem  + 1vw, 2.375rem), 2px);
+    --text-40px: round(down, clamp(2.25rem, 1.2692rem + 1.0256vw, 2.5rem), 2px);
+    --text-45px: round(down, clamp(1.6rem, 1.3202rem + 1.2436vw, 2.8125rem), 2px);
+    --text-50px: round(down, clamp(1.7rem, 1.3712rem + 1.4615vw, 3.125rem), 2px);
+    --text-70px: round(down, clamp(1.9rem, 1.3288rem + 2.5385vw, 4.375rem), 2px);
+    --text-75px: round(down, clamp(2rem, 1.3798rem + 2.7564vw, 4.6875rem), 2px);
+
+    --h1: var(--text-70px);
+    --h2: var(--text-50px);
+    --h3: var(--text-35px);
+    --h4: var(--text-30px);
+    --h5: var(--text-25px);
+    --h6: var(--text-20px);
+}