Mimalloc is vendored instead of fetched

[idavis]

These changes copy a snapshot of the Mimalloc source from v2.1.2 into the mimalloc-sys folder so that we no longer need to use cmake to fetch and prepare the source. This also fixes aarch64 Windows cross-compilation issues caused by cmake generators.

I have addressed all DevSkim feedback and nothing was applicable or actionable.

I've run the release build and everything compiles. It shows a red X in the checks as I cancelled the second half of the build to prevent the release from going out.

Closes #1281

[github-advanced-security]

devskim found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.

[github-actions]

Benchmark for 4faef03

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Test	Base	PR	%
Array append evaluation	345.6±2.03µs	352.5±5.59µs	+2.00%
Array literal evaluation	171.4±4.44µs	193.8±7.48µs	+13.07%
Array update evaluation	427.5±1.47µs	435.9±4.76µs	+1.96%
Deutsch-Jozsa evaluation	5.3±0.12ms	5.2±0.08ms	-1.89%
Large file parity evaluation	33.7±0.15ms	33.7±0.46ms	0.00%
Large input file	35.6±0.73ms	35.2±0.86ms	-1.12%
Large nested iteration	33.8±0.20ms	34.7±0.63ms	+2.66%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1645.5±145.15µs	1651.8±169.55µs	+0.38%
Perform Runtime Capabilities Analysis (RCA) on large file sample	8.3±0.12ms	8.3±0.13ms	0.00%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1573.8±173.83µs	1564.0±178.23µs	-0.62%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	22.5±0.39ms	22.2±0.21ms	-1.33%
Standard library	19.6±0.43ms	20.0±0.67ms	+2.04%
Teleport evaluation	86.3±5.20µs	86.1±9.04µs	-0.23%

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Benchmark for 8f07453

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Test	Base	PR	%
Array append evaluation	342.0±6.77µs	345.6±10.00µs	+1.05%
Array literal evaluation	166.6±3.86µs	170.5±1.59µs	+2.34%
Array update evaluation	416.4±8.83µs	421.5±2.23µs	+1.22%
Deutsch-Jozsa evaluation	5.1±0.07ms	5.1±0.11ms	0.00%
Large file parity evaluation	33.5±0.13ms	33.5±0.37ms	0.00%
Large input file	33.6±0.96ms	28.2±0.93ms	-16.07%
Large nested iteration	32.5±0.84ms	33.3±0.63ms	+2.46%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1618.6±167.09µs	1587.2±74.44µs	-1.94%
Perform Runtime Capabilities Analysis (RCA) on large file sample	8.0±0.18ms	7.8±0.16ms	-2.50%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1512.2±108.59µs	1517.3±74.93µs	+0.34%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	21.3±0.51ms	21.2±0.43ms	-0.47%
Standard library	18.5±0.70ms	16.4±0.21ms	-11.35%
Teleport evaluation	84.0±4.11µs	86.2±8.94µs	+2.62%

[github-actions]

Benchmark for bb4a6ed

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Test	Base	PR	%
Array append evaluation	341.9±2.66µs	362.5±27.67µs	+6.03%
Array literal evaluation	174.7±4.35µs	181.9±5.87µs	+4.12%
Array update evaluation	423.0±3.28µs	436.2±11.32µs	+3.12%
Deutsch-Jozsa evaluation	5.1±0.13ms	5.2±0.15ms	+1.96%
Large file parity evaluation	33.9±0.17ms	33.8±0.23ms	-0.29%
Large input file	31.1±1.39ms	33.8±1.41ms	+8.68%
Large nested iteration	33.6±1.53ms	33.8±1.00ms	+0.60%
Perform Runtime Capabilities Analysis (RCA) on Deutsch-Jozsa sample	1516.4±59.38µs	1512.6±59.97µs	-0.25%
Perform Runtime Capabilities Analysis (RCA) on large file sample	7.9±0.16ms	7.8±0.10ms	-1.27%
Perform Runtime Capabilities Analysis (RCA) on teleport sample	1435.7±70.49µs	1442.3±85.08µs	+0.46%
Perform Runtime Capabilities Analysis (RCA) on the core and std libraries	21.5±0.33ms	21.6±0.59ms	+0.47%
Standard library	17.1±0.77ms	17.5±1.40ms	+2.34%
Teleport evaluation	82.5±3.78µs	83.6±3.94µs	+1.33%