feat: introduce pg_catalog.pg_matviews_info

[yezizp2012]

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What's changed and what's your intention?

Introduced a system table pg_catalog.pg_matviews_info, which contains some basic information and graph field. This's useful for cloud team to build the materialized view graph in their control panel. Below shows an example of a row, the matviewgraph field is json-encoded.

Note pg_catalog.pg_matviews_info does not exist in PostgreSQL. There is a similar one named pg_catalog.pg_matviews.

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Summarize your change (mandatory)
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
• Describe any limitations of the current code (optional)
• Add the 'user-facing changes' label if your PR contains changes that are visible to users (optional)

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #3517 (cb803c1) into main (46ed9d6) will decrease coverage by 0.06%.
The diff coverage is 11.76%.

@@            Coverage Diff             @@
##             main    #3517      +/-   ##
==========================================
- Coverage   74.49%   74.43%   -0.07%     
==========================================
  Files         771      771              
  Lines      108342   108446     +104     
==========================================
+ Hits        80709    80721      +12     
- Misses      27633    27725      +92     

Flag	Coverage Δ
rust	74.43% <11.76%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/frontend/src/meta_client.rs	0.00% <0.00%> (ø)
src/frontend/src/scheduler/task_context.rs	0.00% <0.00%> (ø)
src/frontend/src/test_utils.rs	90.76% <0.00%> (-1.71%)	⬇️
src/meta/src/barrier/mod.rs	79.87% <0.00%> (-1.33%)	⬇️
src/meta/src/stream/stream_manager.rs	76.88% <ø> (+0.80%)	⬆️
src/rpc_client/src/meta_client.rs	0.00% <0.00%> (ø)
src/frontend/src/catalog/pg_catalog/mod.rs	8.75% <2.63%> (-5.54%)	⬇️
src/meta/src/rpc/service/stream_service.rs	20.00% <15.90%> (-22.86%)	⬇️
src/meta/src/rpc/server.rs	80.13% <100.00%> (+0.18%)	⬆️
src/meta/src/manager/id.rs	95.50% <0.00%> (ø)
... and 2 more

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