applet.interface.spi_controller: allow multiple exchanges via CLI. This is very useful for SPI flashes and the like.

applet.interface.spi_controller: `SPIControllerInterface.{transfer→exchange}`.

gateware.i2c: update for deprecations in Amaranth 0.5.

gateware.analyzer: update for deprecations in Amaranth 0.5.

applet.memory.prom: modify to use port groups.

platform.generic: fix value driven on `oe_port`. Due to a mistake only the lowest pin of a multi-pin port would be actually driven.

software: upgrade lockfile for pdm 2.17.

support.endpoint: allow waiting for incoming connection. Some protocols start with the server sending some data as soon as the client connects. If such data is not sent, the client will not proceed with its first message. When send is called before a client is connected, it is immediately discarded. To wait for data sent by the client, a server implementation can call recv_wait. This commit makes recv_wait return after a client connects, too.

applet.interface.swd_openocd: add note regarding SWD remote bitbang support

applet.interface.jtag_svf: automatically insert DUT reset in more cases. See #303.