refactor: serde StaticSchema

[de-sh]

Fixes #XXXX.

Description

This has been opened as a separate PR from #1100 to explore the cause of ingestion failure due to timeouts in cluster setup

---

This PR has:

• been tested to ensure log ingestion and log query works.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added documentation for new or modified features or behaviors.

[coveralls]

Pull Request Test Coverage Report for Build 12873408627

Details

• 0 of 63 (0.0%) changed or added relevant lines in 5 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.003%) to 12.711%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/handlers/http/modal/ingest/ingestor_logstream.rs	0	7	0.0%
src/handlers/http/modal/query/querier_logstream.rs	0	9	0.0%
src/handlers/http/cluster/mod.rs	0	10	0.0%
src/handlers/http/modal/utils/logstream_utils.rs	0	18	0.0%
src/handlers/http/logstream.rs	0	19	0.0%

Totals
Change from base Build 12855418418:	-0.003%
Covered Lines:	2459
Relevant Lines:	19346

---

💛 - Coveralls