## Misc Enhancements/Bugfixes

* `openlane.state`
  * `DesignFormat`
* Now a dataclass encapsulating the information about the DesignFormat
directly.
 	 * `.factory` is a factory for retrieval of DesignFormats by ID
* `DesignFormats` may be registered to the factory using `.register()`
* Registrations for previously included `DesignFormat`s now moved to
where appropriate.
* Renamed `POWERED_NETLIST_NO_PHYSICAL_CELLS` to
`LOGICAL_POWERED_NETLIST`
* Renamed `POWERED_NETLIST_SDF_FRIENDLY` to
`SDF_FRIENDLY_POWERED_NETLIST`
  * `State`
* States initialized with keys that have values that are `None` now
remove said keys.

## API Breaks

* `openlane.steps`
  * `TclStep` now uses the IDs uppercased for `CURRENT_` and `SAVE_`.

* `openlane.state`
* `State` no longer includes all `DesignFormat`s as guaranteed keys and
`.get` must be used to avoide `KeyErrors`
* `DesignFormat` is no longer an enumeration and is not iterable.
However, to avoid massive codebase changes, you can still access
`DesignFormat`s registered to the factory using the dot notation (e.g.
`DesignFormat.NETLIST`), using either their `id` or any of their `alts`.
* Removed `DesignFormatObject`: the DesignFormat class itself is now a
dataclass incorporating these fields, except `name`, which has been
renamed to `full_name`. The enumeration's name has been added to `alts`,
while `.name` is now an alias for `.id`.

* `OpenROAD.CTS`
  * Added flags `CTS_OBSTRUCTION_AWARE` and `CTS_BALANCE_LEVELS`
  * Added `CTS_SINK_BUFFER_MAX_CAP_DERATE_PCT`

## Tool Updates

* Updated nix-eda
   * Updated nixpkgs to nixos-24.11 (@ `3c53b4b`)
   * Updated KLayout to `0.29.9`
   * Updated Magic to `8.3.503`
   * Updated Netgen to `1.5.287`
* Updated ioplace-parser to`0.4.0`
* Updated OpenROAD to `1d61007`
  * Updated OpenSTA to `aa598a2`

Co-authored-by: Kareem Farid <kareefardi@users.noreply.github.com>

Signed-off-by: Mohamed Gaber <donn@efabless.com>

## Steps

* `OpenROAD.DetailedRouting`
* Added `DRT_SAVE_SNAPSHOTS` which enables saving snapshots of the
layout each detalied routing iteration.
  * Added `DRT_SAVE_DRC_REPORT_ITERS`

Signed-off-by: Kareem Farid <kareefardi@users.noreply.github.com>

* `Yosys.*`
  * Add `SYNTH_CORNER`

Signed-off-by: Kareem Farid <kareefardi@users.noreply.github.com>