Extend load_from to allow loading from an absolute path #948

Job	Run time
Format	17s
Build ubuntu stable	24s
Build ubuntu nightly	41s
Build windows stable	1m 22s
Build windows nightly	1m 33s
Build macos stable	34s
Build macos nightly	1m 3s
Clippy ubuntu	27s
Clippy windows	2m 22s
Clippy macos	40s
OTP 26 / Elixir 1.14 / Rust stable / OS macos	3m 43s
OTP 26 / Elixir 1.14 / Rust stable / OS ubuntu	2m 46s
OTP 26 / Elixir 1.14 / Rust nightly / OS macos	3m 26s
OTP 26 / Elixir 1.14 / Rust nightly / OS ubuntu	2m 36s
OTP 25 / Elixir 1.14 / Rust stable / OS macos	3m 4s
OTP 25 / Elixir 1.14 / Rust stable / OS windows	3m 54s
OTP 25 / Elixir 1.14 / Rust stable / OS ubuntu	1m 45s
OTP 25 / Elixir 1.14 / Rust nightly / OS macos	3m 36s
OTP 25 / Elixir 1.14 / Rust nightly / OS windows	3m 48s
OTP 25 / Elixir 1.14 / Rust nightly / OS ubuntu	1m 44s
OTP 24 / Elixir 1.13 / Rust stable / OS macos	3m 38s
OTP 24 / Elixir 1.13 / Rust stable / OS windows	4m 44s
OTP 24 / Elixir 1.13 / Rust stable / OS ubuntu	1m 50s
OTP 24 / Elixir 1.13 / Rust nightly / OS macos	3m 35s
OTP 24 / Elixir 1.13 / Rust nightly / OS windows	3m 39s
OTP 24 / Elixir 1.13 / Rust nightly / OS ubuntu	1m 49s
	59m 0s

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