[EGD-4590] Change KBD parser to JSON for input keyboard files

Changed keyboard input language parser to parse JSON files.
Removed all KPROF files and added JSON.
Added unit tests for new parser.
Modified document about adding languages.

[EGD-5050] Add brownout detection

Brownout detectection realized through charger driver

changelog

battery renames, clean up, degreasing

[EGD-5089] linux battery bsp charging done added

[EGD-4932] new battery icons + battery in TopBar rework

[EGD-4932] all new battery icons - rename

[EGD-4794] all new battery icons (monochrome)

[EGD-4999] fix charger pluging but no icon on Linux

[EGD-5067] Add VS Code GDB configuration for RT1051 and Linux targets

Added "(gdb) Attach" and "(RT1051) RelWithDebInfo" configurations
Fixed RT1051 target gdb setup for FreeRTOS

changelog: fix broken changelog for v0.49.1

Merge branch 'stable'

[EGD-5070] Change new filesystem in module bt

Due to vfs deprecation there is need to
remove all vfs calls from code.
This PR covers module bluetooth.

[EGD-5070] Review changes.

[EGD-5070] Change new filesystem in module bt

Due to vfs deprecation there is need to
remove all vfs calls from code.
This PR covers module bluetooth

changelog: update changelog for v0.52.1

[EGD-5061] Fix lack of audio during call

Audio might have not work if audio streams
were reused. This was fixed by introducing proper
cleaning procedures.

[EGD-4921] Add next harness test cases

Test harness extended with additional tests:
- Making a call to a specific phone number.
- Calling back to the last number from the call log.
- Searching for SMSes with a phone number filter.

[EGD-5003] Fix for 'test' spelling issue in bootstrap.sh

There was a spelling issues in bootstrap.sh

[EGD-5018] Add umount all filesystem

Add umount all mounted filesystem. This function
can be used in the cleanup vfs core stage

[EGD-4918] Change network scan for operators

Change old implementation of network scan. Now in class
which have rest of network settings as NetworkSettings.
Change method from old message style to connect/API.

[EGD-4648] Fix auto screen change

Action `UnlockSim` should be handled only if
there is ongoing SIM flow processing.