feat(integrations): add telekasten.nvim

fix(neogit): improve highlights

chore(README): update preview images

fix(hlgroups): remove duplicate neotree entry

fix(hlgroups): better diff highlights

feat(hlgroups): change neogit section header color

feat(hlgroups): add new indent-blankline hlgroups

fix(README): wrong preview image placement

try to fix notify hlgroups

add notify hlgroups