Core: [skip ci] ignore some code spell checks and filter all '_rc_.py' files

.github/codespellignore

@@ -7,6 +7,7 @@ alocation
 anid
 anormal
 apoints
+aply
 appy
 ba
 beginn
@@ -32,6 +33,7 @@ froms
 hist
 indicies
 inout
+isnt
 ist
 itsel
 lod
@@ -70,5 +72,6 @@ uptodate
 usind
 vas
 vertexes
+vew
 wallthickness
 zuser

.github/workflows/checks.yml

@@ -54,7 +54,7 @@ env:
 
   checkSpelling: true
   listIgnoredMisspelling: .github/codespellignore
-  skip: ./.git,*.po,*.ts,*.svg,./ChangeLog.txt,./src/3rdParty,./src/Mod/Assembly/App/opendcm,./src/CXX,./src/zipios++,./src/Base/swig*,./src/Mod/Robot/App/kdl_cp,./src/Mod/Import/App/SCL,./src/WindowsInstaller,./src/Doc/FreeCAD.uml,./build/,./tests/lib
+  skip: ./.git,*.po,*_rc.py,*.ts,*.svg,./ChangeLog.txt,./src/3rdParty,./src/Mod/Assembly/App/opendcm,./src/CXX,./src/zipios++,./src/Base/swig*,./src/Mod/Robot/App/kdl_cp,./src/Mod/Import/App/SCL,./src/WindowsInstaller,./src/Doc/FreeCAD.uml,./build/,./tests/lib
   codespellFailSilent: false
 
   # Static Analysis