[BUG] The install.sh script uses /usr/local/bin/fvm as a link target which requires sudo privileges

[Nidal-Bakir]

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Describe the bug
When using the install.sh to install the FVM as a standalone bin the script will try to create a link target in the /usr/local/bin/fvm which requires sudo privileges.

To Reproduce
Steps to reproduce the behavior:

1. Go to terminal..
2. Run curl -fsSL https://fvm.app/install.sh | bash
3. See an error

permission denied: /usr/local/bin/fvm
Failed to create symlink.

Expected behavior
The FVM bin can be run from anywhere on the system after installation.

Logs
N/A

Desktop (please complete the following information):

• OS: [linux ubuntu]
• FVM Version [N/A]

Additional context
we have tow options to discuss:

1. The docs should state that the user should run the script with sudo or in root user mode, then the FVM bin will be in /usr/local/bin/fvm without any errors
2. Change the link target to $HOME/.local/bin/fvm

I have modified the install.sh script to use $HOME/.local/bin/fvm and everything worked as expected.

[leoafarias]

@Nidal-Bakir can you do a PR so I can review?

[Nidal-Bakir]

sure thing...
#700