Use max CCU size to collect CCM

[ishantiw]

Description

Add a mechanism to check for max CCU size that is accepted by the network and based on that we create a CCU with number of CCMs it can hold making sure it respects the overall size of CCU transaction.

• we need to calculate the max CCU size ~15kb and determine the number of CCMs that can be included in a sequence. For ex, ccm1, ccm2, ccm3, ccm4, ccm5,..ccm(n) where ccm2 is at the certified height, then we chose from ccm3 to ccm(n) in a way that we can fit into max CCU size, sizeOf[ccm3....ccm(m)] < MAX_CCU_SIZE taking rest of the properties of CCU transaction into account.

• In the newBlockHandler, before calling createCCU. We call the function getListOfCCM(ccm []) => list of ccm where getListOfCCM implements the above logic and returns a list of CCMs that can be included in a CCU respecting max size.

Acceptance Criteria

• A CCU with size under max size is created including sufficiently large CCMs

Additional Information

• Discussion: Create CCU - Closes #7224 #7438 (comment)
• Related function https://github.com/LiskHQ/lisk-sdk/blob/3795e3d60b1883e0243267922f70530c6507ac76/framework-plugins/lisk-framework-chain-connector-plugin/src/chain_connector_plugin.ts#L422

[shuse2]

Max size of CCMs which can be included into the CCU is

export const MAX_CCM_SIZE = 10240

This is based on the maximum size of CCU which can be included into the mainchain block.