implement `From<Vec>` and `FromIterator` for `LazyIndexMap` #581

Job	Run time
build sdist	13s
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
bench	1m 17s
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
fuzz on ubuntu-latest	5m 57s
resolve	3s
fuzz skip	5m 57s
lint	37s
fuzz on macos-latest	35m 16s
test on macos-latest	1m 5s
test jiter-python	38s
test on macos-latest	58s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
test rust-stable on linux	53s
test rust-nightly on linux	1m 38s
test rust-1.74.0 on linux	1m 40s
inspect-pypi-assets	0s
check	2s
release-python	0s
release	0s
	56m 14s

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