[TTS] Add Spanish IPA dictionaries and heteronyms

[rlangman]

What does this PR do ?

Add Spanish pronunciation dictionaries following the same format and naming convention as the German dictionary.

Collection: [TTS]

Changelog

• Add dictionary and heteronym files for es_ES (Spain Spanish) and es_LA (Latin American Spanish).

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PR Type:

• New Feature
• Bugfix
• Documentation

[XuesongYang]

The dictionary words are all uppercase. Are pronunciations cap-sensitive for Spanish?

heteronym words are all lowercase. I am good with that but just want to confirm if lowercase is on purpose.

[rlangman]

The dictionary words are all uppercase. Are pronunciations cap-sensitive for Spanish?

heteronym words are all lowercase. I am good with that but just want to confirm if lowercase is on purpose.

Pronunciation does not change depending on capitalization, so I have followed the same convention as the English dictionary (dictionary words all capital, heteronym all lowercase).

[XuesongYang]

The dictionary words are all uppercase. Are pronunciations cap-sensitive for Spanish?
heteronym words are all lowercase. I am good with that but just want to confirm if lowercase is on purpose.

Pronunciation does not change depending on capitalization, so I have followed the same convention as the English dictionary (dictionary words all capital, heteronym all lowercase).

Great! Thank you!