refactor: separate tech specific code

Make the codebase more PDK-agnostic by moving tech-specific code to `tech.py` and tech specific files (e.g. def files, tile_sizes.yaml) to `tech/<pdkname>` subdirectory.

requirements.txt

@@ -1,11 +1,9 @@
 #
-# This file is autogenerated by pip-compile with Python 3.13
+# This file is autogenerated by pip-compile with Python 3.12
 # by the following command:
 #
 #    pip-compile
 #
-anyio==4.10.0
-    # via httpx
 brotli==1.1.0
     # via tt-support-tools (pyproject.toml)
 cairocffi==1.7.1
@@ -13,10 +11,7 @@ cairocffi==1.7.1
 cairosvg==2.8.2
     # via tt-support-tools (pyproject.toml)
 certifi==2025.8.3
-    # via
-    #   httpcore
-    #   httpx
-    #   requests
+    # via requests
 cffi==1.17.1
     # via cairocffi
 cfgv==3.4.0
@@ -26,9 +21,7 @@ charset-normalizer==3.4.2
 chevron==0.14.0
     # via tt-support-tools (pyproject.toml)
 click==8.2.1
-    # via
-    #   volare
-    #   yowasp-yosys
+    # via yowasp-yosys
 cocotb==1.9.2
     # via tt-support-tools (pyproject.toml)
 cssselect2==0.8.0
@@ -47,29 +40,16 @@ gitdb==4.0.12
     # via gitpython
 gitpython==3.1.45
     # via tt-support-tools (pyproject.toml)
-h11==0.16.0
-    # via httpcore
-httpcore==1.0.9
-    # via httpx
-httpx==0.28.1
-    # via volare
 identify==2.6.12
     # via pre-commit
 idna==3.10
-    # via
-    #   anyio
-    #   httpx
-    #   requests
+    # via requests
 importlib-resources==6.5.2
     # via wasmtime
 iniconfig==2.1.0
     # via pytest
 klayout==0.29.12
     # via tt-support-tools (pyproject.toml)
-markdown-it-py==3.0.0
-    # via rich
-mdurl==0.1.2
-    # via markdown-it-py
 mistune==3.1.3
     # via tt-support-tools (pyproject.toml)
 nodeenv==1.9.1
@@ -80,8 +60,6 @@ numpy==1.26.4
     #   tt-support-tools (pyproject.toml)
 packaging==25.0
     # via pytest
-pcpp==1.30
-    # via volare
 pillow==11.3.0
     # via cairosvg
 platformdirs==4.3.8
@@ -95,9 +73,7 @@ pre-commit==4.2.0
 pycparser==2.22
     # via cffi
 pygments==2.19.2
-    # via
-    #   pytest
-    #   rich
+    # via pytest
 pytest==8.4.1
     # via tt-support-tools (pyproject.toml)
 python-frontmatter==1.1.0
@@ -107,15 +83,10 @@ pyyaml==6.0.2
     #   pre-commit
     #   python-frontmatter
     #   tt-support-tools (pyproject.toml)
-    #   volare
 requests==2.32.4
     # via tt-support-tools (pyproject.toml)
-rich==13.9.4
-    # via volare
 smmap==5.0.2
     # via gitdb
-sniffio==1.3.1
-    # via anyio
 tinycss2==1.4.0
     # via
     #   cairosvg
@@ -124,8 +95,6 @@ urllib3==2.5.0
     # via requests
 virtualenv==20.33.1
     # via pre-commit
-volare==0.20.6
-    # via tt-support-tools (pyproject.toml)
 wasmtime==35.0.0
     # via yowasp-runtime
 webencodings==0.5.1
@@ -136,5 +105,3 @@ yowasp-runtime==1.78
     # via yowasp-yosys
 yowasp-yosys==0.55.0.0.post944
     # via tt-support-tools (pyproject.toml)
-zstandard==0.23.0
-    # via volare