Add /gpt edit (OpenAI Edits endpoint), sqlite path config

What's Changed

• Added the possibility to configure SQLITE db path by @lauralex in https://github.com/Kav-K/GPT3Discord/pull/98
• Add the edit endpoint by @Hikari-Haru in https://github.com/Kav-K/GPT3Discord/pull/92
• /GPT edit to ask GPT to edit a prompt with an instruction!

New Contributors

• @lauralex made their first contribution in https://github.com/Kav-K/GPT3Discord/pull/98

Full Changelog: Kav-K/GPT3Discord@v5.4.1...v6.0