Added Gemini Demo

[ParamThakkar123]

Hello @TheCedarPrince ,

I created this demo script which loads data from JuliaHealthLLM.jl and runs gemini RAG workflow.

I am constant getting this error from OpenSSL which I solved and it was working fine but when I ran it again after a few hours it gave me this same error and I tried numerous but didn't progress much

ERROR: HTTP.Exceptions.ConnectError("https://generativelanguage.googleapis.com/v1beta/chat/completions", CapturedException(OpenSSL.OpenSSLError("unable to get local issuer certificate"), Any[(macro expansion at ssl.jl:532 [inlined], 1), (macro expansion at lock.jl:267 [inlined], 1), (connect(ssl::OpenSSL.SSLStream; require_ssl_verification::Bool) at ssl.jl:525, 1), (connect at ssl.jl:509 [inlined], 1), (#sslconnection#19 at Connections.jl:599 [inlined], 1), (sslconnection at Connections.jl:589 [inlined], 1), (getconnection(::Type{OpenSSL.SSLStream}, host::SubString{String}, port::SubString{String}; kw::Base.Pairs{Symbol, Union{Nothing, Integer}, NTuple{6, Symbol}, @NamedTuple{require_ssl_verification::Bool, keepalive::Bool, readtimeout::Int64, iofunction::Nothing, decompress::Nothing, verbose::Int64}}) at Connections.jl:586, 1), (getconnection at Connections.jl:578 [inlined], 1), (#10 at Connections.jl:467 [inlined], 1), (macro expansion at try_with_timeout.jl:92 [inlined], 1), ((::ConcurrentUtilities.var"#2#4"{Any, Channel{Any}, HTTP.Connections.var"#10#13"{OpenSSL.SSLStream, Bool, Bool, Base.Pairs{Symbol, Union{Nothing, Int64}, NTuple{4, Symbol}, @NamedTuple{readtimeout::Int64, iofunction::Nothing, decompress::Nothing, verbose::Int64}}, SubString{String}, SubString{String}}, Timer})() at ConcurrentUtilities.jl:10, 1)]))

Would a please take a look?

[TheCedarPrince]

This seems like the core of the issue:

OpenSSL.OpenSSLError("unable to get local issuer certificate")