apps: update chat bots, readme (#1928)

* apps: update chat bots, readme

* CLI readme

* broadcast bot

* delete messages from non-publishers, better replies, support forwarding low-res images and links

* typo

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

* change

---------

Co-authored-by: spaced4ndy <8711996+spaced4ndy@users.noreply.github.com>

simplex-chat.cabal

@@ -235,6 +235,54 @@ executable simplex-bot-advanced
   if flag(swift)
     cpp-options: -DswiftJSON
 
+executable simplex-broadcast-bot
+  main-is: Main.hs
+  other-modules:
+      Options
+      Paths_simplex_chat
+  hs-source-dirs:
+      apps/simplex-broadcast-bot
+  ghc-options: -Wall -Wcompat -Werror=incomplete-patterns -Wredundant-constraints -Wincomplete-record-updates -Wincomplete-uni-patterns -Wunused-type-patterns -threaded
+  build-depends:
+      aeson ==2.0.*
+    , ansi-terminal >=0.10 && <0.12
+    , async ==2.2.*
+    , attoparsec ==0.14.*
+    , base >=4.7 && <5
+    , base64-bytestring >=1.0 && <1.3
+    , bytestring ==0.10.*
+    , composition ==1.0.*
+    , containers ==0.6.*
+    , cryptonite >=0.27 && <0.30
+    , direct-sqlcipher ==2.3.*
+    , directory ==1.3.*
+    , email-validate ==2.3.*
+    , exceptions ==0.10.*
+    , filepath ==1.4.*
+    , http-types ==0.12.*
+    , mtl ==2.2.*
+    , network >=3.1.2.7 && <3.2
+    , optparse-applicative >=0.15 && <0.17
+    , process ==1.6.*
+    , random >=1.1 && <1.3
+    , record-hasfield ==1.0.*
+    , simple-logger ==0.1.*
+    , simplex-chat
+    , simplexmq >=3.4
+    , socks ==0.6.*
+    , sqlcipher-simple ==0.4.*
+    , stm ==2.5.*
+    , template-haskell ==2.16.*
+    , terminal ==0.2.*
+    , text ==1.2.*
+    , time ==1.9.*
+    , unliftio ==0.2.*
+    , unliftio-core ==0.2.*
+    , zip ==1.7.*
+  default-language: Haskell2010
+  if flag(swift)
+    cpp-options: -DswiftJSON
+
 executable simplex-chat
   main-is: Main.hs
   other-modules: