Update css type for Line Width (#85)

Co-authored-by: Rogin Farrer <rogin@roginfarrer.com>

.changeset/sixty-points-double.md

@@ -0,0 +1,5 @@
+---
+'rainbow-sprinkles': patch
+---
+
+Updated CSS type for Line Width to support strings

.gitignore

@@ -3,3 +3,4 @@ node_modules
 dist
 .pnpm-debug.log
 .DS_Store
+.vscode

CONTRIBUTING.md

@@ -57,8 +57,8 @@ Then the following scripts are available:
 We welcome anyone that wants to contribute to Rainbow Sprinkles to triage and reply to open issues to help troubleshoot
 and fix existing bugs. Here is what you can do:
 
-- Help ensure that existing issues follows the recommendations from the _[Reporting Issues](#reporting-issues)_ section,
-  providing feedback to the issue's author on what might be missing.
+- Help ensure that existing issues follow the recommendations from the _[Reporting Issues](#reporting-issues)_ section,
+  providing feedback to the issue's author on what might be missing,
   instructions and code samples.
 - Review existing pull requests, and testing patches against real existing applications that use Rainbow Sprinkles.
 - Write a test, or add a missing test case to an existing test.

packages/rainbow-sprinkles/src/css.d.ts

@@ -9601,7 +9601,7 @@ declare namespace DataType {
 
   type LineStyle = "dashed" | "dotted" | "double" | "groove" | "hidden" | "inset" | "none" | "outset" | "ridge" | "solid";
 
-  type LineWidth = number | "medium" | "thick" | "thin";
+  type LineWidth = number | OnlyString | "medium" | "thick" | "thin";
 
   type MaskLayer = Position | RepeatStyle | GeometryBox | CompositingOperator | MaskingMode | "no-clip" | "none" | OnlyString;