added caching script gen1 function in main file

[octonawish-akcodes]

Need reviews @spbnick and how to test it.

[spbnick]

This is a good start! Thank you @octonawish-akcodes.

[spbnick]

Looks alright to me, thank you, Abhishek, but let's work on the commit message a bit.

First of all, please write your commit messages in imperative mood (as if giving a command). I.e. instead of writing "Added", please write "Add".

Then let's work on the meaning. Right now you're saying you've added a "script". "Script" usually means a quickly put-together (somewhat poorly-made) program, an executable, which you can run by itself. You're adding no such thing. What you're adding here is a module (kcidb.cache), a couple functions in another module (main.py), and their dependencies.

Additionally, you're saying that you're adding a "gen1 function". However, there's no such thing as a "gen1 function" in general, without the context of Google Cloud Functions, which you don't have in your message. So it would make little sense to whoever else reads that. Further on, "gen1" is just an implementation detail which has little practical effect, and is especially pointless to mention, since all our Cloud Functions are "gen1".

What I would write instead, is something along the lines of "Add URL cache client and a caching Cloud Function". This says that we're adding a "URL cache client", without going into details of how it's implemented (i.e. the module, as that's normally how it's done), and mentions the Cloud Function, as that's an important high-level interface, but skips specifying which generation it is, as that's not really important, and because we gotta keep our commit subjects short.

In a larger community, it would be important to elaborate the details and the purpose in the commit message body, but we all know what this is about, here.

[octonawish-akcodes]

Ah!!! okay. I will remember this in future PR's