started writing lexer after making string lib

string/docs/modify/trim.md

@@ -0,0 +1,23 @@
+# string_Trim
+Trim whitespace from both sides of a string.
+
+## Arguments
+- str (string): the string to trim.
+
+## Returns
+trimmed (string): the string with its whitespace removed.
+
+## Raises
+- `AllocFail`: raised if Ground failed to allocate memory for the new string.
+
+## Example
+### Ground
+```python
+call !string_Trim "   aaabbb  " &trimmed
+println $trimmed # "aaabbb"
+```
+
+### Solstice
+```c
+puts string_Trim("   aaabbb  ") // "aaabbb"
+```