add flex support + fix raw amount display

[n4l5u0r]

Checklist

• App update process has been followed
• Target branch is develop
• Application version has been bumped
  This pull request includes several updates to the workflow configurations, build scripts, and source code to support the new Flex SDK, improve build processes, and enhance functionality.

Workflow Configuration Updates:

• .github/workflows/codeql_check.yml: Added $FLEX_SDK to the sdk matrix.
• .github/workflows/main.yml:
  • Added master and dev branches for safety reasons.
  • Updated GitHub Actions to use actions/checkout@v4 and actions/setup-node@v4. [1] [2] [3] [4] [5]
  • Added jobs for building packages for Stax and Flex.

Build Script Enhancements:

• CMakeLists.txt: Integrated Hunter package manager and added dependencies for fmt, jsoncpp, and GTest.
• Makefile and app/Makefile: Introduced PRODUCTION_BUILD flag and adjusted stack sizes for different targets.
• app/Makefile.version: Updated application version.

Source Code Updates:

• app/src/coin.h: Added COIN_DEFAULT_DENOM_REPR_2 for additional denomination representation.
• app/src/common/tx.c: Adjusted buffer sizes and storage definitions to include Flex target. [1] [2]
• app/src/json/json_parser.h: Increased MAX_NUMBER_OF_TOKENS for Flex target.
• app/src/parser.c: Enhanced denomination checks and amount formatting to support multiple representations.

Documentation:

• README.md: Updated to include Flex in the list of supported devices.