Add C++ `DynamicArrays` in Brian2 for runtime mode #1525

Job	Run time
Run linters with pre-commit	1m 2s
Determine Python versions	6s
Test building the documentation	1m 43s
Python 3.13 on ubuntu-24.04 (standalone: true, 32bit: false)	32m 1s
Python 3.13 on ubuntu-24.04 (standalone: false, 32bit: true)	1h 42m 20s
Python 3.13 on ubuntu-24.04 (standalone: false, 32bit: false)	1h 58m 40s
Python 3.13 on macOS-13 (standalone: false, 32bit: false)	1h 56m 49s
Python 3.13 on macOS-13 (standalone: false, 32bit: true)	1h 56m 44s
Python 3.13 on windows-2022 (standalone: true, 32bit: true)	29m 42s
Python 3.13 on windows-2022 (standalone: false, 32bit: true)	2h 16m 42s
Python 3.13 on windows-2022 (standalone: false, 32bit: false)	2h 19m 11s
Python 3.13 on windows-2022 (standalone: true, 32bit: false)	30m 3s
Python 3.13 on ubuntu-24.04 (standalone: true, 32bit: true)	29m 47s
Python 3.13 on macOS-14 (standalone: false, 32bit: false)	1h 2m 49s
Python 3.11 < 3.11.9 \|\| 3.11 >= 3.12 on ubuntu-24.04 (standalone: false, 32bit: false)	1h 42m 35s
Python 3.13 on macOS-14 (standalone: true, 32bit: false)	10m 54s
Python 3.13 on macOS-14 (standalone: true, 32bit: true)	11m 37s
Python 3.11 < 3.11.9 \|\| 3.11 >= 3.12 on ubuntu-24.04 (standalone: true, 32bit: false)	29m 12s
Python 3.13 on macOS-14 (standalone: false, 32bit: true)	1h 3m 40s
Python 3.13 on macOS-13 (standalone: true, 32bit: false)	34m 7s
Python 3.13 on macOS-13 (standalone: true, 32bit: true)	28m 9s
Indicate completion to coveralls.io	0s
	19h 57m 53s

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