Parse CLI options, including presets

[teohhanhui]

No description provided.

[teohhanhui]

Current output of hyfetch --help:

Usage: hyfetch [-c] [-C=CONFIG_FILE] [-p=PRESET] [-m=MODE]

Available options:
    -c, --config         Configure hyfetch
    -C, --config-file=CONFIG_FILE  Use another config file
    -p, --preset=PRESET  Use preset
                         PRESET={abrosexual,agender,akiosexual,androsexual,aroace1,aroace2,aroace3,aromantic,asexual,autoromantic,autosexual,baker,beiyang,bigender,biromantic1,bisexual,boyflux2,burger,demiboy,demifae,demifaun,demigender,demigirl,femboy,finsexual,fraysexual,gay-men,genderfae,genderfaun,genderfluid,genderflux,gendernonconforming1,gendernonconforming2,gendervoid,girlflux,greygender,greysexual,gynesexual,intergender,lesbian,neutrois,nonbinary,nonhuman-unity,omniromantic,omnisexual,pangender,pansexual,plural,polysexual,queer,rainbow,tomboy,transfeminine,transgender,transmasculine,unlabeled1,unlabeled2,voidboy,voidgirl}
    -m, --mode=MODE      Color mode MODE={8bit,rgb}
    -h, --help           Prints help information
    -V, --version        Prints version information