newt info should allow to show external repositories

[sjanc]

currently newt info show only repositories that were pulled due to repositories.yml, but not external repos

would be good to be able to get full overview of project state with newt info, either by default or via extra parameter (eg newt info --full). External repos could also be emphasized (eg @ instead of * in list, or some note that it is external) to distinguish them from 'normal' repos.

janc@ix:~/devel/mynewt$ newt info
Apache Newt 1.13.0-dev / 0db6dbc / 2024-10-29_12:36
Repository info:
    * apache-mynewt-core: 2294499a8d68687b98232cd0668656e870509060, 0.0.0
    * apache-mynewt-mcumgr: 911e538756b9f4c863c65f1514e1aaca0484c1c3, 0.0.0
    * apache-mynewt-nimble: 8f6b9df15a0ea6d39d5b1e54fda61fd3c2535b5c, 0.0.0
    * mcuboot: 9c99326b9756dbcc35b524636d99ed5f3e6cb29b, 2.1.0
janc@ix:~/devel/mynewt$ ls -1 repos/
apache-mynewt-core
apache-mynewt-mcumgr
apache-mynewt-nimble
arm-CMSIS_5
atmel-samd21xx
blues-note-c
cirruslogic-mcu-drivers
eembc-coremark
liblc3
libsamplerate
littlefs
lvgl
mbedtls
mcuboot
nordic-nrfx
nxp-mcux-sdk
stm-cmsis_device_f0
stm-cmsis_device_f1
stm-cmsis_device_f3
stm-cmsis_device_f4
stm-cmsis_device_f7
stm-cmsis_device_g0
stm-cmsis_device_g4
stm-cmsis_device_h7
stm-cmsis_device_l0
stm-cmsis_device_l1
stm-cmsis_device_l4
stm-cmsis_device_u5
stm-cmsis_device_wb
stm-stm32f0xx_hal_driver
stm-stm32f1xx_hal_driver
stm-stm32f3xx_hal_driver
stm-stm32f4xx_hal_driver
stm-stm32f7xx_hal_driver
stm-stm32g0xx_hal_driver
stm-stm32g4xx_hal_driver
stm-stm32h7xx_hal_driver
stm-stm32l0xx_hal_driver
stm-stm32l1xx_hal_driver
stm-stm32l4xx_hal_driver
stm-stm32u5xx_hal_driver
stm-stm32wbxx_hal_driver
tinyusb