feat(lint): implement v1 with 3 rules - trailing spaces, encoded passwords and Doxygen header

src/example.ts

@@ -0,0 +1,45 @@
+import { lint } from './lint'
+
+const text = `/**
+   @file
+   @brief Returns an unused libref
+   @details Use as follows:
+  
+     libname mclib0 (work);
+     libname mclib1 (work);
+     libname mclib2 (work);
+  
+     %let libref=%mf_getuniquelibref({SAS001});
+     %put &=libref;
+  
+   which returns:
+  
+ > mclib3
+  
+   @param prefix= first part of libref.  Remember that librefs can only be 8 characters,
+     so a 7 letter prefix would mean that maxtries should be 10.
+   @param maxtries= the last part of the libref.  Provide an integer value.
+  
+   @version 9.2
+   @author Allan Bowe
+ **/
+  
+  
+ %macro mf_getuniquelibref(prefix=mclib,maxtries=1000);
+   %local x libref;
+   %let x={SAS002};
+   %do x=0 %to &maxtries;
+   %if %sysfunc(libref(&prefix&x)) ne 0 %then %do;
+     %let libref=&prefix&x;
+     %let rc=%sysfunc(libname(&libref,%sysfunc(pathname(work))));
+     %if &rc %then %put %sysfunc(sysmsg());
+     &prefix&x
+     %*put &sysmacroname: Libref &libref assigned as WORK and returned;
+     %return;
+   %end;
+   %end;
+   %put unable to find available libref in range &prefix.0-&maxtries;
+ %mend;
+`
+
+lint(text).then((diagnostics) => console.table(diagnostics))