feat(text): add client sample code

[jvallesm]

This is a port of https://github.com/instill-ai/component/pull/368/files

Because

• we want developers to be able to see the result without login into Instill Cloud

This commit

• expose text component function
• add the example section for golang client

[linear[bot]]

INS-5847 [Feat.] Use operator components directly via CLI and in Go

[chuang8511]

I think the way I did before is not so good because it creases the cost of maintenance. We should automate this part.

Probably need to deal with this with the task that automates the sample recipe integration test.

[chuang8511]

I think the way I did before is not so good because it creases the cost of maintenance. We should automate this part.

Probably need to deal with this with the task that automates the sample recipe integration test.