Add redis pipeline (ts, py) and ratelimit custom rate (py)

[CahidArda]

adding page for auto pipelining

also updating ratelimit examples

[linear[bot]]

DX-593 Automated Pipeline

[CahidArda]

waiting for typescript redis auto pipeline https://github.com/upstash/upstash-redis/pull/1062 pr was merged

[CahidArda]

also updated docs for:

• python ratelimit custom rates https://github.com/upstash/ratelimit-python/pull/13, commit c9c86c2
• python redis pipeline & transaction https://github.com/upstash/redis-python/pull/47, commit 05f6ca7