Postgres ClickPipe: Add docs for pausing, table modification

[Amogh-Bharadwaj]

Summary

This PR adds docs for:

1. Pausing and resuming a Postgres ClickPipe
2. Removing a table from a Postgres ClickPipe
3. Adding a table to a Postgres ClickPipe
4. Resyncing specific tables in a Postgres Clickpipe.

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/en/integrations/index.mdx

[CLAassistant]

All committers have signed the CLA.

[gingerwizard]

 ====== /home/runner/work/clickhouse-docs/clickhouse-docs/docs/en/integrations/data-ingestion/clickpipes/postgres/table_resync.md ======
Resyncing
resyncing

add to dictionary please @Amogh-Bharadwaj

[gingerwizard]

@Amogh-Bharadwaj you also need to add to sidebars.js maybe

clickhouse-docs/sidebars.js

Line 660 in bee2f0d

"en/integrations/data-ingestion/clickpipes/postgres/source/generic",

but discuss with @iskakaushik as imagine you want a sub category

[gingerwizard]

sidebar + spelling

[gingerwizard]

@Amogh-Bharadwaj can address issues please

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[Amogh-Bharadwaj]

sidebar + spelling

We wouldn't need these in the sidebar I think @gingerwizard cc @iskakaushik

[gingerwizard]

@Amogh-Bharadwaj the paths are wrong - we no longer have en. Images also moved to static folder - see contributing guide

[Amogh-Bharadwaj]

@gingerwizard I've added an entry without the en as well
The linter throws an error saying the path with en is missing unless I add this entry with the en

[Blargian]

Hey @Amogh-Bharadwaj, we made some fairly big changes to the docs repo in the last month. I've taken the liberty to move the pages to the new structure (we no longer have /docs/en. Everything under en is now just in docs) and we're also now storing all images under the static directory going forward - I updated this for you.

The only thing left to do is decide where these pages need to go and add them to the sidebar.js :)