zephyr: scripts: use esptool from hal requirements.txt

Use package-managers to provide hal requirements to pip.
Update the generator script accordingly and add the actual
`requirements.txt` file.

TODO: esptool-5.0.1 bugfix is required, which is not yet released.

Signed-off-by: Marek Matej <marek.matej@espressif.com>

Author: Marek Matej

zephyr/module.yml

@@ -4,6 +4,10 @@ build:
   kconfig: zephyr/Kconfig
   settings:
     dts_root: .
+package-managers:
+  pip:
+    requirement-files:
+      - zephyr/requirements.txt
 blobs:
   - path: lib/esp32c6/libble_app.a
     sha256: fa816b02b51ae563003da5debad67ec9b80e90db9cd736bb2e0fb64224c7093b

zephyr/requirements.txt

@@ -0,0 +1 @@
+esptool>=5.0.0

zephyr/scripts/blobs/esp_genblobs.py

@@ -18,6 +18,10 @@
 
 module_yaml = """\
 name: hal_espressif
+package-managers:
+  pip:
+    requirement-files:
+      - zephyr/requirements.txt
 build:
   cmake: zephyr
   kconfig: zephyr/Kconfig