feat(meta): add system parameter pause_on_next_bootstrap

[BugenZhao]

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What's changed and what's your intention?

Add system parameter pause_on_next_bootstrap. When set to true, the cluster will pause all data sources (including connectors and DMLs) on the next startup, then reset this value. This is for debugging and maintenance purposes.

To resume the data, users have to run risectl meta resume, or simply restart the cluster again. We may introduce an SQL command to do this in the future.

By introducing the PausedReason in the global barrier manager, the paused state won't be accidentally broken by the Resume stage of scaling, or creating a new streaming job.

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
• I have added fuzzing tests or opened an issue to track them. (Optional, recommended for new SQL features Sqlsmith: Sql feature generation #7934).
• My PR contains breaking changes. (If it deprecates some features, please create a tracking issue to remove them in the future).
• All checks passed in ./risedev check (or alias, ./risedev c)
• My PR changes performance-critical code. (Please run macro/micro-benchmarks and show the results.)

• My PR contains critical fixes that are necessary to be merged into the latest release. (Please check out the details)

Documentation

• My PR needs documentation updates. (Please use the Release note section below to summarize the impact on users)

Release note

• Add a new system parameter pause_on_next_bootstrap. When set to true, the cluster will pause all data sources (including connectors and DMLs) on the next startup, then reset this value. This is for debugging and maintenance purposes.

[BugenZhao]

Will write a deterministic test to cover this.

[fuyufjh]

LGTM!

[github-actions]

license-eye has totally checked 4023 files.

Valid	Invalid	Ignored	Fixed
1774	1	2248	0

Click to see the invalid file list

• src/tests/simulation/tests/integration_tests/recovery/pause_on_bootstrap.rs

[codecov]

Codecov Report

Merging #11936 (5dd79c1) into main (1217290) will decrease coverage by 0.02%.
The diff coverage is 47.58%.

@@            Coverage Diff             @@
##             main   #11936      +/-   ##
==========================================
- Coverage   69.81%   69.80%   -0.02%     
==========================================
  Files        1392     1392              
  Lines      233462   233510      +48     
==========================================
+ Hits       162996   163006      +10     
- Misses      70466    70504      +38     

Flag	Coverage Δ
rust	69.80% <47.58%> (-0.02%)	⬇️

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

Files Changed	Coverage Δ
src/meta/src/barrier/schedule.rs	80.50% <0.00%> (-1.39%)	⬇️
src/meta/src/rpc/service/scale_service.rs	0.00% <0.00%> (ø)
src/meta/src/stream/scale.rs	10.51% <0.00%> (ø)
src/meta/src/stream/stream_manager.rs	74.01% <0.00%> (ø)
src/stream/src/executor/dml.rs	89.47% <ø> (ø)
...c/stream/src/executor/source/fs_source_executor.rs	0.00% <ø> (ø)
src/meta/src/barrier/command.rs	34.47% <28.94%> (-0.85%)	⬇️
src/stream/src/executor/mod.rs	47.57% <33.33%> (-0.45%)	⬇️
src/meta/src/model/barrier.rs	76.00% <60.00%> (-24.00%)	⬇️
src/meta/src/barrier/recovery.rs	52.56% <61.11%> (-0.10%)	⬇️
... and 8 more

... and 2 files with indirect coverage changes

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