Add shellcheck-py to pre-commit

[jbampton]

https://pypi.org/project/shellcheck-py/

[jbampton]

shellcheck...............................................................Failed
- hook id: shellcheck
- exit code: 1

In .bashrc line 1:
alias salam="/mnt/c/Users/MAX/Salam/src/main"
^-- SC2148 (error): Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.


In .bashrc line 3:
source ~/.bashrc
       ^-------^ SC1090 (warning): ShellCheck can't follow non-constant source. Use a directive to specify location.


In src/build-linux.sh line 36:
        if [ $? -ne 0 ]; then
             ^-- SC2181 (style): Check exit code directly with e.g. 'if ! mycmd;', not indirectly with $?.


In src/build-linux.sh line 44:
gcc -o "$output" *.o
                 ^-- SC2035 (info): Use ./*glob* or -- *glob* so names with dashes won't become options.


In src/build-linux.sh line 45:
if [ $? -ne 0 ]; then
     ^-- SC2181 (style): Check exit code directly with e.g. 'if ! mycmd;', not indirectly with $?.


In src/build-linux.sh line 56:
if [ $? -ne 0 ]; then
     ^-- SC2181 (style): Check exit code directly with e.g. 'if ! mycmd;', not indirectly with $?.


In src/build-mac.sh line 1:

^-- SC2148 (error): Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.


In src/build-webassembly.sh line 45:
if [ $? -eq 0 ]; then
     ^-- SC2181 (style): Check exit code directly with e.g. 'if mycmd;', not indirectly with $?.

For more information:
  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...
  https://www.shellcheck.net/wiki/SC1090 -- ShellCheck can't follow non-const...
  https://www.shellcheck.net/wiki/SC2035 -- Use ./*glob* or -- *glob* so name...

[jbampton]

Hey @BaseMax can you clean up these errors ?