src layout and test warnings cleaned up (#380)

* test: fix TIFF file handle leaks and suppress closed-file warnings across readers and tests

Signed-off-by: Sricharan Reddy Varra <sricharan.varra@biohub.org>

* build: set src/iohub to wheel build target

Signed-off-by: Sricharan Reddy Varra <sricharan.varra@biohub.org>

---------

Signed-off-by: Sricharan Reddy Varra <sricharan.varra@biohub.org>

Author: srivarra

pyproject.toml

@@ -8,7 +8,7 @@ description = "N-dimensional bioimaging data I/O with OME metadata in Python"
 authors = [
     {name = "CZ Biohub and iohub contributors", email = "iohub@czbiohub.org"},
 ]
-license = {text = "BSD 3-Clause License"}
+license = {file = "LICENSE"}
 readme = "README.md"
 requires-python = ">=3.11"
 classifiers = [
@@ -83,6 +83,10 @@ iohub = "iohub.cli.cli:cli"
 [tool.hatch.version]
 source = "uv-dynamic-versioning"
 
+[tool.hatch.build.targets.wheel]
+packages = ["src/iohub"]
+
+
 [tool.uv-dynamic-versioning]
 vcs = "git"
 style = "pep440"