Add Support for Text File Upload about ollama-webui

[TanvirOnGH]

Possibly support all the types of file formats (and more?) same as GPT4all LocalDocs as mentioned here:

["txt", "doc", "docx", "pdf", "rtf", "odt", "html", "htm", "xls", "xlsx", "csv", "ods", "ppt", "pptx", 
"odp", "xml", "json", "log", "md", "org", "tex", "asc", "wks",
"wpd", "wps", "wri", "xhtml", "xht", "xslt", "yaml", "yml", "dtd", "sgml", "tsv", "strings", "resx",
"plist", "properties", "ini", "config", "bat", "sh", "ps1", "cmd", "awk", "sed", "vbs", "ics", "mht",
"mhtml", "epub", "djvu", "azw", "azw3", "mobi", "fb2", "prc", "lit", "lrf", "tcr", "pdb", "oxps",
"xps", "pages", "numbers", "key", "keynote", "abw", "zabw", "123", "wk1", "wk3", "wk4", "wk5", "wq1",
"wq2", "xlw", "xlr", "dif", "slk", "sylk", "wb1", "wb2", "wb3", "qpw", "wdb", "wks", "wku", "wr1",
"wrk", "xlk", "xlt", "xltm", "xltx", "xlsm", "xla", "xlam", "xll", "xld", "xlv", "xlw", "xlc", "xlm",
"xlt", "xln"]

[tjbck]

Hi, Thanks for the suggestion. Document parser (or RAG) functionality was something I've been planning on implementing for a while now. I'm just not sure what would be the best way to approach this as I'd like to keep this web ui project as lightweight as possible. One possible way to implement this feature could be making it purely client-side but I don't see that being a viable solution as there are people who use the web ui via their phone browser and the experience would not be great. Do you have any technical implementation ideas in mind? I'm quite overwhelmed at the moment so if you manage to implement the feature, PR is always welcome. Thanks!

[tjbck]

duplicate of #31