fixes #25650; nim ic import std/strbasics (#25760)

fixes #25650

This pull request refactors and improves the dependency resolution logic
in the Nim compiler, The most important changes are grouped below:

### Dependency Resolution Refactor

* Replaced the `resolveFile` procedure with two more specialized
procedures: `resolveImport` (which uses the compiler's module lookup
rules for imports) and `resolveInclude` (which resolves includes
relative to the including file or search paths). Updated all usages
accordingly, improving clarity and correctness of dependency handling.
[[1]](diffhunk://#diff-1203947eecb9ef641ce7ee029677f875eb983de050b82c65ca286517feed00e6L82-R94)
[[2]](diffhunk://#diff-1203947eecb9ef641ce7ee029677f875eb983de050b82c65ca286517feed00e6L106-R103)
[[3]](diffhunk://#diff-1203947eecb9ef641ce7ee029677f875eb983de050b82c65ca286517feed00e6L121-R118)
* Removed the unused `strutils` import from `compiler/deps.nim` for
cleaner dependencies.


### Testing Improvements

* Added `import std/strbasics` to `tests/ic/tmiscs.nim` to ensure
required symbols are available for tests.


I tried to improve `resolveFile`, which is harder because either we need
to add `lib/std` to search path and all of other nested directory to
`--path` in `config/nim.cfg`. So I choose toi reuse `findModule` for
imports

tests/ic/tmiscs.nim

@@ -10,6 +10,7 @@ discard """
 @[1, 2]
 '''
 """
+import std/strbasics
 
 # Object variant / case object
 type