Topology construction for 1D elements is broken

[AbdAlazezAhmed]

Topology construction seems to be broken for 1D elements.

julia> grid = generate_grid(Line,(3,))
Grid{1, Line, Float64} with 3 Line cells and 4 nodes

julia> topo = ExclusiveTopology(grid)
ERROR: MethodError: no method matching edges(::Line)
Closest candidates are:
  edges(::Interpolation{2}) at C:\Users\Abdul\.julia\dev\Ferrite\src\interpolations.jl:44
  edges(::Interpolation) at deprecated.jl:70
  edges(::Quadrilateral) at C:\Users\Abdul\.julia\dev\Ferrite\src\Grid\grid.jl:217
  ...
Stacktrace:
 [1] ExclusiveTopology(cells::Vector{Line})
   @ Ferrite C:\Users\Abdul\.julia\dev\Ferrite\src\Grid\grid.jl:405
 [2] ExclusiveTopology(grid::Grid{1, Line, Float64})
   @ Ferrite C:\Users\Abdul\.julia\dev\Ferrite\src\Grid\grid.jl:478
 [3] top-level scope
   @ REPL[3]:1

I made a workaround while working on sparsity patterns for DG.

[koehlerson]

either #670 needs to include a regression test, then it can be closed, or otherwise close after adding regression test

[termi-official]

Done in linked PR.