Improve build time

[vasil-pashov]

• Fix compilation errors with clang-18 due to Werror
• Run include-what-you-use to reduce includes and add forward declarations

TLDR
Using the suggestions from include-what-you-use makes full builds ~10% faster sparing 20s on a local machine (Processor: 13th Gen Intel(R) Core(TM) i7-1370P, 1900 Mhz, 14 Core(s), 20 Logical Processor(s)) building with 20 threads.

Build info:
OS: Ubuntu (WSL)
Compiler: Clang 18
Linker: Mold
Build system: Ninja
(Clang and Mold are custom builds using additional flags -O3 -march=native -flto=full, arcticdb is built as usual)

#	Master (debug) in seconds	IWYU (debug) in seconds
1	212.31	203.37
2	234.02	212.33
3	234.24	213.05
4	233.63	213.32
5	233.27	213.76
6	233.79	213.07
7	234.13	213.23
8	232.67	212.27
9	233.18	212.25
10	233.87	212.58
11	233.75	213.21
12	233.63	213.16
13	232.89	213.87
14	233.64	213.39
15	233.12	213.54
Mean	232.1426667	212.4266667
Median	233.63	213.16
SD	5.505148845	2.557028595

Reference Issues/PRs

What does this implement or fix?

Any other comments?

Checklist

Checklist for code changes...

• Have you updated the relevant docstrings, documentation and copyright notice?
• Is this contribution tested against all ArcticDB's features?
• Do all exceptions introduced raise appropriate error messages?
• Are API changes highlighted in the PR description?
• Is the PR labelled as enhancement or bug so it appears in autogenerated release notes?