Added Tagalog and Filipino

Did some research:
- The two official languages of Philippines are English and Filipino
- 30% of the Philippines speaks Tagalog
- Filipino is often noted as being Tagalog-based (with influence on Western languages)
--- As a result, Tagalog (Philippines) (tl_ph) will be the fallback for Filipino (fil)
- Side note: There is no 2-letter ISO 639-1 code for Filipino.