add new file for arithmetic functions

Author: Blargian

scripts/settings/arithmetic-functions.sql

@@ -0,0 +1,22 @@
+WITH arithmetic_functions AS (
+    SELECT
+        name,
+        introduced_in,
+        syntax,
+        arguments,
+        returned_value,
+        examples
+    FROM system.functions WHERE categories='Arithmetic'
+)
+SELECT
+    format(
+        '{}{}{}{}{}{}',
+        '## ' || name || ' ' || printf('{#%s}', name) || '\n\n',
+        'Introduced in: v'||introduced_in||'\n\n',
+        '### Syntax {#syntax}\n\n'||printf('```sql\n%s\n```', syntax)||'\n\n',
+        '### Arguments {#arguments}\n\n'||arguments||'\n',
+        '### Returned value {#returned_value}\n\n'||returned_value||'\n\n',
+        '### Examples {#examples}\n\n'||examples||'\n\n'
+    )
+FROM arithmetic_functions
+INTO OUTFILE 'arithmetic-functions.md' TRUNCATE FORMAT LineAsString