chore: add Koda configuration, .koda symlinks, and double-approval workflow #8763

Job	Run time
Auto assign	2s
Setup toolchain and dependencies	1m 39s
Detect changed packages	7s
Build libraries	4m 40s
Run Danger check	1m 15s
Solana Fixture Test (${{ matrix.device }} - ${{ matrix.test }})	1s
Run health check	1s
Ethereum Clear Signing Test (${{ matrix.device }} - ${{ matrix.test }})	1s
Build apps	1s
Run unit tests	1s
	7m 48s

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