Add metrics for remaining Pebble non-emoji fonts.

[jwise]

This adds metrics for:

• agency_fb_36_numbers_am_pm
• agency_fb_60_numbers_am_pm
• agency_fb_60_thin_numbers_am_pm
• bitham_18_light_subset
• bitham_30_black
• bitham_34_light_subset
• bitham_34_medium_numbers
• bitham_42_bold
• bitham_42_light
• bitham_42_medium_numbers
• droid_serif_28_bold
• gothic_36
• gothic_36_bold
• gothic_36_bold_tintin
• gothic_36_tintin
• leco_20_bold_numbers
• leco_26_bold_numbers_am_pm
• leco_28_light_numbers
• leco_32_bold_numbers
• leco_36_bold_numbers
• leco_38_bold_numbers
• leco_42_numbers
• roboto_bold_subset_49
• roboto_condensed_21

[hellcp]

I was trying to implement metrically compatible font to Agency FB based on those metrics, and something stood out to me: Agency metrics are mislabeled, the first glyph list is 60 tall, while the first one is labeled as 36. Probably worth verifying this again and correcting mistakes before merging :P