stage1: Two scripts added

Two scripts added for base glyphs rename and
to adjust left and right spacing.

Usage:
python rename_base_glyphs.py <PATH>/Lohit-Kannada.sfd
python adjust_spacing.py <PATH>/Lohit-Kannada.sfd

Signed-off-by: Aravinda VK <mail@aravindavk.in>