Add .perltidyrc, and format

http/.perltidyrc

@@ -0,0 +1,14 @@
+-pbp     # Start with Perl Best Practices
+-w       # Show all warnings
+-iob     # Ignore old breakpoints
+-l=120   # 120 characters per line
+-mbl=2   # No more than 2 blank lines
+-i=2     # Indentation is 2 columns
+-ci=2    # Continuation indentation is 2 columns
+-vt=0    # Less vertical tightness
+-pt=2    # High parenthesis tightness
+-bt=2    # High brace tightness
+-sbt=2   # High square bracket tightness
+-wn      # Weld nested containers
+-isbc    # Don't indent comments without leading space
+-nst     # Don't output to STDOUT